102210111021021 has 32 divisors (see below), whose sum is σ = 138388310043648. Its totient is φ = 67096251624960.

The previous prime is 102210111021019. The next prime is 102210111021023. The reversal of 102210111021021 is 120120111012201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (102210111021019) and next prime (102210111021023).

It is not a de Polignac number, because 102210111021021 - 2¹ = 102210111021019 is a prime.

It is a super-3 number, since 3×102210111021021³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102210111021023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23374911 + ... + 27400851.

It is an arithmetic number, because the mean of its divisors is an integer number (4324634688864).

Almost surely, 2^{102210111021021} is an apocalyptic number.

It is an amenable number.

102210111021021 is a deficient number, since it is larger than the sum of its proper divisors (36178199022627).

102210111021021 is a wasteful number, since it uses less digits than its factorization.

102210111021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4026581.

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

Adding to 102210111021021 its reverse (120120111012201), we get a palindrome (222330222033222).

The spelling of 102210111021021 in words is "one hundred two trillion, two hundred ten billion, one hundred eleven million, twenty-one thousand, twenty-one".