100102021201220 has 12 divisors (see below), whose sum is σ = 210214244522604. Its totient is φ = 40040808480480.

The previous prime is 100102021201099. The next prime is 100102021201297. The reversal of 100102021201220 is 22102120201001.

It can be written as a sum of positive squares in 2 ways, for example, as 62921319831616 + 37180701369604 = 7932296^2 + 6097598^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100102021201195 and 100102021201204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2502550530011 + ... + 2502550530050.

It is an arithmetic number, because the mean of its divisors is an integer number (17517853710217).

Almost surely, 2^{100102021201220} is an apocalyptic number.

100102021201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100102021201220 is an abundant number, since it is smaller than the sum of its proper divisors (110112223321384).

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

100102021201220 is a wasteful number, since it uses less digits than its factorization.

100102021201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5005101060070 (or 5005101060068 counting only the distinct ones).

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

Adding to 100102021201220 its reverse (22102120201001), we get a palindrome (122204141402221).

The spelling of 100102021201220 in words is "one hundred trillion, one hundred two billion, twenty-one million, two hundred one thousand, two hundred twenty".