102111100021253 has 2 divisors, whose sum is σ = 102111100021254. Its totient is φ = 102111100021252.

The previous prime is 102111100021193. The next prime is 102111100021351. The reversal of 102111100021253 is 352120001111201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87694665598849 + 14416434422404 = 9364543^2 + 3796898^2 .

It is an emirp because it is prime and its reverse (352120001111201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102111100021253 - 2¹⁶ = 102111099955717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102111100011253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055550010626 + 51055550010627.

It is an arithmetic number, because the mean of its divisors is an integer number (51055550010627).

Almost surely, 2^{102111100021253} is an apocalyptic number.

It is an amenable number.

102111100021253 is a deficient number, since it is larger than the sum of its proper divisors (1).

102111100021253 is an equidigital number, since it uses as much as digits as its factorization.

102111100021253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 102111100021253 its reverse (352120001111201), we get a palindrome (454231101132454).

The spelling of 102111100021253 in words is "one hundred two trillion, one hundred eleven billion, one hundred million, twenty-one thousand, two hundred fifty-three".