100021120011 has 12 divisors (see below), whose sum is σ = 144567642960. Its totient is φ = 66637965840.

The previous prime is 100021119959. The next prime is 100021120051. The reversal of 100021120011 is 110021120001.

It is a happy number.

It is not a de Polignac number, because 100021120011 - 2¹⁹ = 100020595723 is a prime.

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 = 100021119975 and 100021120002.

It is not an unprimeable number, because it can be changed into a prime (100021120051) 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, 3550260 + ... + 3578321.

It is an arithmetic number, because the mean of its divisors is an integer number (12047303580).

Almost surely, 2^100021120011 is an apocalyptic number.

100021120011 is a deficient number, since it is larger than the sum of its proper divisors (44546522949).

100021120011 is a wasteful number, since it uses less digits than its factorization.

100021120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7130146 (or 7130143 counting only the distinct ones).

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

Adding to 100021120011 its reverse (110021120001), we get a palindrome (210042240012).

The spelling of 100021120011 in words is "one hundred billion, twenty-one million, one hundred twenty thousand, eleven".