10010102100021 has 8 divisors (see below), whose sum is σ = 14829780888960. Its totient is φ = 6673401399996.

The previous prime is 10010102099989. The next prime is 10010102100029. The reversal of 10010102100021 is 12000120101001.

It is a happy number.

It is not a de Polignac number, because 10010102100021 - 2⁵ = 10010102099989 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 = 10010102099976 and 10010102100012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010102100029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185372261085 + ... + 185372261138.

It is an arithmetic number, because the mean of its divisors is an integer number (1853722611120).

Almost surely, 2^{10010102100021} is an apocalyptic number.

It is an amenable number.

10010102100021 is a deficient number, since it is larger than the sum of its proper divisors (4819678788939).

10010102100021 is an equidigital number, since it uses as much as digits as its factorization.

10010102100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370744522232 (or 370744522226 counting only the distinct ones).

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

Adding to 10010102100021 its reverse (12000120101001), we get a palindrome (22010222201022).

The spelling of 10010102100021 in words is "ten trillion, ten billion, one hundred two million, one hundred thousand, twenty-one".