102022100111021 has 4 divisors (see below), whose sum is σ = 102031860199932. Its totient is φ = 102012340022112.

The previous prime is 102022100110939. The next prime is 102022100111077. The reversal of 102022100111021 is 120111001220201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46687634137225 + 55334465973796 = 6832835^2 + 7438714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102022100111021 is a prime.

It is a super-2 number, since 2×102022100111021² (a number of 29 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 = 102022100110987 and 102022100111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102022100111081) 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, 4880028776 + ... + 4880049681.

It is an arithmetic number, because the mean of its divisors is an integer number (25507965049983).

Almost surely, 2^{102022100111021} is an apocalyptic number.

It is an amenable number.

102022100111021 is a deficient number, since it is larger than the sum of its proper divisors (9760088911).

102022100111021 is an equidigital number, since it uses as much as digits as its factorization.

102022100111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9760088910.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102022100111021 its reverse (120111001220201), we get a palindrome (222133101331222).

The spelling of 102022100111021 in words is "one hundred two trillion, twenty-two billion, one hundred million, one hundred eleven thousand, twenty-one".