100121021022220 has 24 divisors (see below), whose sum is σ = 229368157251408. Its totient is φ = 36407644008000.

The previous prime is 100121021022181. The next prime is 100121021022271. The reversal of 100121021022220 is 22220120121001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100121021022194 and 100121021022203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227547774831 + ... + 227547775270.

It is an arithmetic number, because the mean of its divisors is an integer number (9557006552142).

Almost surely, 2^{100121021022220} is an apocalyptic number.

100121021022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100121021022220 is an abundant number, since it is smaller than the sum of its proper divisors (129247136229188).

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

100121021022220 is a wasteful number, since it uses less digits than its factorization.

100121021022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455095550121 (or 455095550119 counting only the distinct ones).

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

Adding to 100121021022220 its reverse (22220120121001), we get a palindrome (122341141143221).

The spelling of 100121021022220 in words is "one hundred trillion, one hundred twenty-one billion, twenty-one million, twenty-two thousand, two hundred twenty".