102210111212021 has 8 divisors (see below), whose sum is σ = 102330587830200. Its totient is φ = 102089704909248.

The previous prime is 102210111211997. The next prime is 102210111212081. The reversal of 102210111212021 is 120212111012201.

It can be written as a sum of positive squares in 4 ways, for example, as 43260730589521 + 58949380622500 = 6577289^2 + 7677850^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102210111212021 - 2²⁶ = 102210044103157 is a prime.

It is a super-3 number, since 3×102210111212021³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102210111212081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14669666 + ... + 20484611.

It is an arithmetic number, because the mean of its divisors is an integer number (12791323478775).

Almost surely, 2^{102210111212021} is an apocalyptic number.

It is an amenable number.

102210111212021 is a deficient number, since it is larger than the sum of its proper divisors (120476618179).

102210111212021 is a wasteful number, since it uses less digits than its factorization.

102210111212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35157703.

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

Adding to 102210111212021 its reverse (120212111012201), we get a palindrome (222422222224222).

The spelling of 102210111212021 in words is "one hundred two trillion, two hundred ten billion, one hundred eleven million, two hundred twelve thousand, twenty-one".