211021220010 has 32 divisors (see below), whose sum is σ = 511465300992. Its totient is φ = 55715172800.

The previous prime is 211021219991. The next prime is 211021220023. The reversal of 211021220010 is 10022120112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34818954 + ... + 34825013.

It is an arithmetic number, because the mean of its divisors is an integer number (15983290656).

Almost surely, 2^211021220010 is an apocalyptic number.

211021220010 is an abundant number, since it is smaller than the sum of its proper divisors (300444080982).

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

211021220010 is a wasteful number, since it uses less digits than its factorization.

211021220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69644078.

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

Adding to 211021220010 its reverse (10022120112), we get a palindrome (221043340122).

The spelling of 211021220010 in words is "two hundred eleven billion, twenty-one million, two hundred twenty thousand, ten".