102100001022 has 24 divisors (see below), whose sum is σ = 221234438880. Its totient is φ = 34030599840.

The previous prime is 102100000979. The next prime is 102100001027. The reversal of 102100001022 is 220100001201.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 102100000995 and 102100001013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102100001027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9147 + ... + 451977.

It is an arithmetic number, because the mean of its divisors is an integer number (9218101620).

Almost surely, 2^102100001022 is an apocalyptic number.

102100001022 is an abundant number, since it is smaller than the sum of its proper divisors (119134437858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102100001022 is a wasteful number, since it uses less digits than its factorization.

102100001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455648 (or 455645 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 102100001022 its reverse (220100001201), we get a palindrome (322200002223).

The spelling of 102100001022 in words is "one hundred two billion, one hundred million, one thousand, twenty-two".