22102021012021 has 8 divisors (see below), whose sum is σ = 22178998314144. Its totient is φ = 22025177468880.

The previous prime is 22102021011977. The next prime is 22102021012051. The reversal of 22102021012021 is 12021012020122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22102021012021 - 2²¹ = 22102018914869 is a prime.

It is a super-3 number, since 3×22102021012021³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22102021011986 and 22102021012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102021012051) 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, 33108690 + ... + 33769651.

It is an arithmetic number, because the mean of its divisors is an integer number (2772374789268).

Almost surely, 2^{22102021012021} is an apocalyptic number.

It is an amenable number.

22102021012021 is a deficient number, since it is larger than the sum of its proper divisors (76977302123).

22102021012021 is an equidigital number, since it uses as much as digits as its factorization.

22102021012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66879491.

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

Adding to 22102021012021 its reverse (12021012020122), we get a palindrome (34123033032143).

It can be divided in two parts, 2210202 and 1012021, that added together give a palindrome (3222223).

The spelling of 22102021012021 in words is "twenty-two trillion, one hundred two billion, twenty-one million, twelve thousand, twenty-one".