10101000201021 has 144 divisors (see below), whose sum is σ = 16041019531264. Its totient is φ = 6119123263488.

The previous prime is 10101000201007. The next prime is 10101000201029. The reversal of 10101000201021 is 12010200010101.

It is a happy number.

It is not a de Polignac number, because 10101000201021 - 2⁵ = 10101000200989 is a prime.

It is a super-2 number, since 2×10101000201021² (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 = 10101000200994 and 10101000201012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101000201029) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 9292547940 + ... + 9292549026.

Almost surely, 2^{10101000201021} is an apocalyptic number.

It is an amenable number.

10101000201021 is a deficient number, since it is larger than the sum of its proper divisors (5940019330243).

10101000201021 is a wasteful number, since it uses less digits than its factorization.

10101000201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820 (or 1800 counting only the distinct ones).

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

Adding to 10101000201021 its reverse (12010200010101), we get a palindrome (22111200211122).

The spelling of 10101000201021 in words is "ten trillion, one hundred one billion, two hundred one thousand, twenty-one".