100121200221020 has 96 divisors (see below), whose sum is σ = 236779738272000. Its totient is φ = 35246318607360.

The previous prime is 100121200221013. The next prime is 100121200221059. The reversal of 100121200221020 is 20122002121001.

It is a junction number, because it is equal to n+sod(n) for n = 100121200220986 and 100121200221004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45761270 + ... + 47899229.

It is an arithmetic number, because the mean of its divisors is an integer number (2466455607000).

Almost surely, 2^{100121200221020} is an apocalyptic number.

100121200221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100121200221020 is an abundant number, since it is smaller than the sum of its proper divisors (136658538050980).

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

100121200221020 is a wasteful number, since it uses less digits than its factorization.

100121200221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93660675 (or 93660673 counting only the distinct ones).

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

Adding to 100121200221020 its reverse (20122002121001), we get a palindrome (120243202342021).

The spelling of 100121200221020 in words is "one hundred trillion, one hundred twenty-one billion, two hundred million, two hundred twenty-one thousand, twenty".