100121010220212 has 24 divisors (see below), whose sum is σ = 233629411298976. Its totient is φ = 33371709961248.

The previous prime is 100121010220159. The next prime is 100121010220213. The reversal of 100121010220212 is 212022010121001.

It is a junction number, because it is equal to n+sod(n) for n = 100121010220191 and 100121010220200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121010220213) 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, 244801183 + ... + 245209830.

It is an arithmetic number, because the mean of its divisors is an integer number (9734558804124).

Almost surely, 2^{100121010220212} is an apocalyptic number.

100121010220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100121010220212 is an abundant number, since it is smaller than the sum of its proper divisors (133508401078764).

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

100121010220212 is a wasteful number, since it uses less digits than its factorization.

100121010220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490028047 (or 490028045 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100121010220212 its reverse (212022010121001), we get a palindrome (312143020341213).

The spelling of 100121010220212 in words is "one hundred trillion, one hundred twenty-one billion, ten million, two hundred twenty thousand, two hundred twelve".