210120122211011 has 32 divisors (see below), whose sum is σ = 225697369379328. Its totient is φ = 194904470937600.

The previous prime is 210120122211007. The next prime is 210120122211049. The reversal of 210120122211011 is 110112221021012.

It is a cyclic number.

It is not a de Polignac number, because 210120122211011 - 2² = 210120122211007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210120122211091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15115461161 + ... + 15115475061.

It is an arithmetic number, because the mean of its divisors is an integer number (7053042793104).

Almost surely, 2^{210120122211011} is an apocalyptic number.

210120122211011 is a deficient number, since it is larger than the sum of its proper divisors (15577247168317).

210120122211011 is a wasteful number, since it uses less digits than its factorization.

210120122211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22271.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 210120122211011 its reverse (110112221021012), we get a palindrome (320232343232023).

The spelling of 210120122211011 in words is "two hundred ten trillion, one hundred twenty billion, one hundred twenty-two million, two hundred eleven thousand, eleven".