100121210022020 has 96 divisors (see below), whose sum is σ = 241869473556480. Its totient is φ = 34430252722560.

The previous prime is 100121210022017. The next prime is 100121210022037. The reversal of 100121210022020 is 20220012121001.

It is a junction number, because it is equal to n+sod(n) for n = 100121210021986 and 100121210022004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18918812 + ... + 23625491.

It is an arithmetic number, because the mean of its divisors is an integer number (2519473682880).

Almost surely, 2^{100121210022020} is an apocalyptic number.

100121210022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100121210022020 is an abundant number, since it is smaller than the sum of its proper divisors (141748263534460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100121210022020 is a wasteful number, since it uses less digits than its factorization.

100121210022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42544905 (or 42544903 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100121210022020 its reverse (20220012121001), we get a palindrome (120341222143021).

The spelling of 100121210022020 in words is "one hundred trillion, one hundred twenty-one billion, two hundred ten million, twenty-two thousand, twenty".