211421032020 has 72 divisors (see below), whose sum is σ = 699611421600. Its totient is φ = 51253583040.

The previous prime is 211421032019. The next prime is 211421032027. The reversal of 211421032020 is 20230124112.

It is a happy number.

211421032020 is a `hidden beast` number, since 2 + 114 + 210 + 320 + 20 = 666.

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 = 211421031984 and 211421032002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211421032027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53387170 + ... + 53391129.

It is an arithmetic number, because the mean of its divisors is an integer number (9716825300).

Almost surely, 2^211421032020 is an apocalyptic number.

211421032020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211421032020 is an abundant number, since it is smaller than the sum of its proper divisors (488190389580).

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

211421032020 is a wasteful number, since it uses less digits than its factorization.

211421032020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106778325 (or 106778320 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 211421032020 its reverse (20230124112), we get a palindrome (231651156132).

The spelling of 211421032020 in words is "two hundred eleven billion, four hundred twenty-one million, thirty-two thousand, twenty".