102210111002121 has 16 divisors (see below), whose sum is σ = 144428646248064. Its totient is φ = 64073159265024.

The previous prime is 102210111002011. The next prime is 102210111002137. The reversal of 102210111002121 is 121200111012201.

It is a happy number.

It is not a de Polignac number, because 102210111002121 - 2¹¹ = 102210111000073 is a prime.

It is a super-3 number, since 3×102210111002121³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102210111002121.

It is not an unprimeable number, because it can be changed into a prime (102210111002171) 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, 916741981 + ... + 916853466.

It is an arithmetic number, because the mean of its divisors is an integer number (9026790390504).

Almost surely, 2^{102210111002121} is an apocalyptic number.

It is an amenable number.

102210111002121 is a deficient number, since it is larger than the sum of its proper divisors (42218535245943).

102210111002121 is a wasteful number, since it uses less digits than its factorization.

102210111002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833596560.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102210111002121 its reverse (121200111012201), we get a palindrome (223410222014322).

The spelling of 102210111002121 in words is "one hundred two trillion, two hundred ten billion, one hundred eleven million, two thousand, one hundred twenty-one".