211102011020 has 24 divisors (see below), whose sum is σ = 443509353504. Its totient is φ = 84403636736.

The previous prime is 211102011011. The next prime is 211102011041. The reversal of 211102011020 is 20110201112.

It is a junction number, because it is equal to n+sod(n) for n = 211102010992 and 211102011010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2276384 + ... + 2367303.

It is an arithmetic number, because the mean of its divisors is an integer number (18479556396).

Almost surely, 2^211102011020 is an apocalyptic number.

211102011020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211102011020 is an abundant number, since it is smaller than the sum of its proper divisors (232407342484).

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

211102011020 is a wasteful number, since it uses less digits than its factorization.

211102011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4645969 (or 4645967 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 211102011020 its reverse (20110201112), we get a palindrome (231212212132).

The spelling of 211102011020 in words is "two hundred eleven billion, one hundred two million, eleven thousand, twenty".