102210145331 has 4 divisors (see below), whose sum is σ = 116811594672. Its totient is φ = 87608695992.

The previous prime is 102210145307. The next prime is 102210145339. The reversal of 102210145331 is 133541012201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102210145331 - 2¹⁸ = 102209883187 is a prime.

It is a super-2 number, since 2×102210145331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102210145297 and 102210145306.

It is not an unprimeable number, because it can be changed into a prime (102210145339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7300724660 + ... + 7300724673.

It is an arithmetic number, because the mean of its divisors is an integer number (29202898668).

Almost surely, 2^102210145331 is an apocalyptic number.

102210145331 is a deficient number, since it is larger than the sum of its proper divisors (14601449341).

102210145331 is an equidigital number, since it uses as much as digits as its factorization.

102210145331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14601449340.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 102210145331 its reverse (133541012201), we get a palindrome (235751157532).

The spelling of 102210145331 in words is "one hundred two billion, two hundred ten million, one hundred forty-five thousand, three hundred thirty-one".