102121101100220 has 24 divisors (see below), whose sum is σ = 219684905295408. Its totient is φ = 39852137014400.

The previous prime is 102121101100189. The next prime is 102121101100267. The reversal of 102121101100220 is 22001101121201.

It is a junction number, because it is equal to n+sod(n) for n = 102121101100195 and 102121101100204.

It is a congruent number.

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, 62268963266 + ... + 62268964905.

It is an arithmetic number, because the mean of its divisors is an integer number (9153537720642).

Almost surely, 2^{102121101100220} is an apocalyptic number.

102121101100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102121101100220 is an abundant number, since it is smaller than the sum of its proper divisors (117563804195188).

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

102121101100220 is a wasteful number, since it uses less digits than its factorization.

102121101100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124537928221 (or 124537928219 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102121101100220 its reverse (22001101121201), we get a palindrome (124122202221421).

The spelling of 102121101100220 in words is "one hundred two trillion, one hundred twenty-one billion, one hundred one million, one hundred thousand, two hundred twenty".