10101000102021 has 24 divisors (see below), whose sum is σ = 14664828578400. Its totient is φ = 6699619733856.

The previous prime is 10101000102019. The next prime is 10101000102077. The reversal of 10101000102021 is 12020100010101.

It is a happy number.

It is not a de Polignac number, because 10101000102021 - 2¹ = 10101000102019 is a prime.

It is a super-2 number, since 2×10101000102021² (a number of 27 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 = 10101000101994 and 10101000102012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101000102001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83488630 + ... + 83609528.

It is an arithmetic number, because the mean of its divisors is an integer number (611034524100).

Almost surely, 2^{10101000102021} is an apocalyptic number.

It is an amenable number.

10101000102021 is a deficient number, since it is larger than the sum of its proper divisors (4563828476379).

10101000102021 is a wasteful number, since it uses less digits than its factorization.

10101000102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168225 (or 168222 counting only the distinct ones).

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

Adding to 10101000102021 its reverse (12020100010101), we get a palindrome (22121100112122).

The spelling of 10101000102021 in words is "ten trillion, one hundred one billion, one hundred two thousand, twenty-one".