211213132020 has 144 divisors (see below), whose sum is σ = 700168577472. Its totient is φ = 51111966720.

The previous prime is 211213132003. The next prime is 211213132033. The reversal of 211213132020 is 20231312112.

211213132020 is a `hidden beast` number, since 211 + 2 + 131 + 320 + 2 + 0 = 666.

It is a super-2 number, since 2×211213132020² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211213131984 and 211213132002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1020004 + ... + 1209476.

It is an arithmetic number, because the mean of its divisors is an integer number (4862281788).

Almost surely, 2^211213132020 is an apocalyptic number.

211213132020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211213132020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350084288736).

211213132020 is an abundant number, since it is smaller than the sum of its proper divisors (488955445452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211213132020 is a wasteful number, since it uses less digits than its factorization.

211213132020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190062 (or 190057 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 211213132020 its reverse (20231312112), we get a palindrome (231444444132).

The spelling of 211213132020 in words is "two hundred eleven billion, two hundred thirteen million, one hundred thirty-two thousand, twenty".