102101221031 has 2 divisors, whose sum is σ = 102101221032. Its totient is φ = 102101221030.

The previous prime is 102101220989. The next prime is 102101221037. The reversal of 102101221031 is 130122101201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102101221031 - 2¹⁸ = 102100958887 is a prime.

It is a super-2 number, since 2×102101221031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102101220997 and 102101221015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102101221037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51050610515 + 51050610516.

It is an arithmetic number, because the mean of its divisors is an integer number (51050610516).

Almost surely, 2^102101221031 is an apocalyptic number.

102101221031 is a deficient number, since it is larger than the sum of its proper divisors (1).

102101221031 is an equidigital number, since it uses as much as digits as its factorization.

102101221031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 102101221031 its reverse (130122101201), we get a palindrome (232223322232).

The spelling of 102101221031 in words is "one hundred two billion, one hundred one million, two hundred twenty-one thousand, thirty-one".