102020211212111 has 8 divisors (see below), whose sum is σ = 105570592956480. Its totient is φ = 98471992362912.

The previous prime is 102020211211981. The next prime is 102020211212113. The reversal of 102020211212111 is 111212112020201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102020211212111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102020211212111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020211212113) 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, 540627815 + ... + 540816488.

It is an arithmetic number, because the mean of its divisors is an integer number (13196324119560).

Almost surely, 2^{102020211212111} is an apocalyptic number.

102020211212111 is a deficient number, since it is larger than the sum of its proper divisors (3550381744369).

102020211212111 is a wasteful number, since it uses less digits than its factorization.

102020211212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081447585.

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

Adding to 102020211212111 its reverse (111212112020201), we get a palindrome (213232323232312).

The spelling of 102020211212111 in words is "one hundred two trillion, twenty billion, two hundred eleven million, two hundred twelve thousand, one hundred eleven".