210111021011121 has 16 divisors (see below), whose sum is σ = 298206061761600. Its totient is φ = 131210667168768.

The previous prime is 210111021011081. The next prime is 210111021011167. The reversal of 210111021011121 is 121110120111012.

It is not a de Polignac number, because 210111021011121 - 2⁷ = 210111021010993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210111021011121.

It is not an unprimeable number, because it can be changed into a prime (210111021012121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20708749216 + ... + 20708759361.

It is an arithmetic number, because the mean of its divisors is an integer number (18637878860100).

Almost surely, 2^{210111021011121} is an apocalyptic number.

It is an amenable number.

210111021011121 is a deficient number, since it is larger than the sum of its proper divisors (88095040750479).

210111021011121 is a wasteful number, since it uses less digits than its factorization.

210111021011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41417508688.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 210111021011121 its reverse (121110120111012), we get a palindrome (331221141122133).

The spelling of 210111021011121 in words is "two hundred ten trillion, one hundred eleven billion, twenty-one million, eleven thousand, one hundred twenty-one".