100102021011 has 12 divisors (see below), whose sum is σ = 147954408888. Its totient is φ = 65182711104.

The previous prime is 100102020979. The next prime is 100102021031. The reversal of 100102021011 is 110120201001.

It is a happy number.

It is not a de Polignac number, because 100102021011 - 2⁵ = 100102020979 is a prime.

It is a super-2 number, since 2×100102021011² (a number of 23 digits) contains 22 as substring.

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 = 100102020984 and 100102021002.

It is not an unprimeable number, because it can be changed into a prime (100102021031) 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, 129330390 + ... + 129331163.

It is an arithmetic number, because the mean of its divisors is an integer number (12329534074).

Almost surely, 2^100102021011 is an apocalyptic number.

100102021011 is a deficient number, since it is larger than the sum of its proper divisors (47852387877).

100102021011 is a wasteful number, since it uses less digits than its factorization.

100102021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258661602 (or 258661599 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 100102021011 its reverse (110120201001), we get a palindrome (210222222012).

The spelling of 100102021011 in words is "one hundred billion, one hundred two million, twenty-one thousand, eleven".