102100202012220 has 48 divisors (see below), whose sum is σ = 295102519369728. Its totient is φ = 26348439228480.

The previous prime is 102100202012209. The next prime is 102100202012243. The reversal of 102100202012220 is 22210202001201.

It is a super-2 number, since 2×102100202012220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 102100202012220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27446289004 + ... + 27446292723.

It is an arithmetic number, because the mean of its divisors is an integer number (6147969153536).

Almost surely, 2^{102100202012220} is an apocalyptic number.

102100202012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102100202012220 is an abundant number, since it is smaller than the sum of its proper divisors (193002317357508).

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

102100202012220 is a wasteful number, since it uses less digits than its factorization.

102100202012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54892581770 (or 54892581768 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102100202012220 its reverse (22210202001201), we get a palindrome (124310404013421).

The spelling of 102100202012220 in words is "one hundred two trillion, one hundred billion, two hundred two million, twelve thousand, two hundred twenty".