211022120100 has 72 divisors (see below), whose sum is σ = 666062556768. Its totient is φ = 51156876800.

The previous prime is 211022120069. The next prime is 211022120107. The reversal of 211022120100 is 1021220112.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (211022120107) 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, 31969749 + ... + 31976348.

It is an arithmetic number, because the mean of its divisors is an integer number (9250868844).

Almost surely, 2^211022120100 is an apocalyptic number.

211022120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211022120100 is an abundant number, since it is smaller than the sum of its proper divisors (455040436668).

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

211022120100 is a wasteful number, since it uses less digits than its factorization.

211022120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63946125 (or 63946118 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 211022120100 its reverse (1021220112), we get a palindrome (212043340212).

The spelling of 211022120100 in words is "two hundred eleven billion, twenty-two million, one hundred twenty thousand, one hundred".