100002220020021 has 64 divisors (see below), whose sum is σ = 147616130128896. Its totient is φ = 59714654630400.

The previous prime is 100002220019939. The next prime is 100002220020097. The reversal of 100002220020021 is 120020022200001.

It is not a de Polignac number, because 100002220020021 - 2³⁷ = 99864781066549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100002220019979 and 100002220020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100002220021021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1082498385 + ... + 1082590761.

It is an arithmetic number, because the mean of its divisors is an integer number (2306502033264).

Almost surely, 2^{100002220020021} is an apocalyptic number.

100002220020021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100002220020021 is a deficient number, since it is larger than the sum of its proper divisors (47613910108875).

100002220020021 is a wasteful number, since it uses less digits than its factorization.

100002220020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94162.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 100002220020021 its reverse (120020022200001), we get a palindrome (220022242220022).

The spelling of 100002220020021 in words is "one hundred trillion, two billion, two hundred twenty million, twenty thousand, twenty-one".