210120220111212 has 36 divisors (see below), whose sum is σ = 531586958325696. Its totient is φ = 69980767620960.

The previous prime is 210120220111157. The next prime is 210120220111213. The reversal of 210120220111212 is 212111022021012.

210120220111212 is a `hidden beast` number, since 2 + 1 + 0 + 120 + 220 + 111 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (210120220111213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2471029788 + ... + 2471114819.

It is an arithmetic number, because the mean of its divisors is an integer number (14766304397936).

Almost surely, 2^{210120220111212} is an apocalyptic number.

It is an amenable number.

210120220111212 is an abundant number, since it is smaller than the sum of its proper divisors (321466738214484).

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

210120220111212 is a wasteful number, since it uses less digits than its factorization.

210120220111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4942145798 (or 4942145793 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 210120220111212 its reverse (212111022021012), we get a palindrome (422231242132224).

The spelling of 210120220111212 in words is "two hundred ten trillion, one hundred twenty billion, two hundred twenty million, one hundred eleven thousand, two hundred twelve".