102020101001 has 32 divisors (see below), whose sum is σ = 127979647488. Its totient is φ = 79177351680.

The previous prime is 102020100977. The next prime is 102020101013. The reversal of 102020101001 is 100101020201.

It is not a de Polignac number, because 102020101001 - 2²⁶ = 101952992137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102020101001.

It is not an unprimeable number, because it can be changed into a prime (102020101081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1232741 + ... + 1312893.

It is an arithmetic number, because the mean of its divisors is an integer number (3999363984).

Almost surely, 2^102020101001 is an apocalyptic number.

It is an amenable number.

102020101001 is a deficient number, since it is larger than the sum of its proper divisors (25959546487).

102020101001 is a wasteful number, since it uses less digits than its factorization.

102020101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80441.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 102020101001 its reverse (100101020201), we get a palindrome (202121121202).

The spelling of 102020101001 in words is "one hundred two billion, twenty million, one hundred one thousand, one".