102021212123111 has 8 divisors (see below), whose sum is σ = 105446033754624. Its totient is φ = 98604753915960.

The previous prime is 102021212123107. The next prime is 102021212123113. The reversal of 102021212123111 is 111321212120201.

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 102021212123111 - 2² = 102021212123107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021212123113) 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, 2090831285 + ... + 2090880078.

It is an arithmetic number, because the mean of its divisors is an integer number (13180754219328).

Almost surely, 2^{102021212123111} is an apocalyptic number.

102021212123111 is a deficient number, since it is larger than the sum of its proper divisors (3424821631513).

102021212123111 is an equidigital number, since it uses as much as digits as its factorization.

102021212123111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181712181.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 102021212123111 its reverse (111321212120201), we get a palindrome (213342424243312).

The spelling of 102021212123111 in words is "one hundred two trillion, twenty-one billion, two hundred twelve million, one hundred twenty-three thousand, one hundred eleven".