212100021220010 has 128 divisors (see below), whose sum is σ = 482085363916800. Its totient is φ = 65262154014720.

The previous prime is 212100021219967. The next prime is 212100021220141. The reversal of 212100021220010 is 10022120001212.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 396892049 + ... + 397426091.

It is an arithmetic number, because the mean of its divisors is an integer number (3766291905600).

Almost surely, 2^{212100021220010} is an apocalyptic number.

212100021220010 is an abundant number, since it is smaller than the sum of its proper divisors (269985342696790).

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

212100021220010 is a wasteful number, since it uses less digits than its factorization.

212100021220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540676.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212100021220010 its reverse (10022120001212), we get a palindrome (222122141221222).

The spelling of 212100021220010 in words is "two hundred twelve trillion, one hundred billion, twenty-one million, two hundred twenty thousand, ten".