10202122021021 has 16 divisors (see below), whose sum is σ = 11826108165888. Its totient is φ = 8619819264000.

The previous prime is 10202122021009. The next prime is 10202122021099. The reversal of 10202122021021 is 12012022120201.

It is a happy number.

It is not a de Polignac number, because 10202122021021 - 2¹³ = 10202122012829 is a prime.

It is a super-2 number, since 2×10202122021021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10202122020986 and 10202122021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202122021621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523101 + ... + 4547293.

It is an arithmetic number, because the mean of its divisors is an integer number (739131760368).

Almost surely, 2^{10202122021021} is an apocalyptic number.

It is an amenable number.

10202122021021 is a deficient number, since it is larger than the sum of its proper divisors (1623986144867).

10202122021021 is an equidigital number, since it uses as much as digits as its factorization.

10202122021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4029372.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10202122021021 its reverse (12012022120201), we get a palindrome (22214144141222).

The spelling of 10202122021021 in words is "ten trillion, two hundred two billion, one hundred twenty-two million, twenty-one thousand, twenty-one".