2102101122220 has 96 divisors (see below), whose sum is σ = 5055324825600. Its totient is φ = 727204185600.

The previous prime is 2102101122193. The next prime is 2102101122221. The reversal of 2102101122220 is 222211012012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2102101122194 and 2102101122203.

It is not an unprimeable number, because it can be changed into a prime (2102101122221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2209705 + ... + 3014464.

It is an arithmetic number, because the mean of its divisors is an integer number (52659633600).

Almost surely, 2^{2102101122220} is an apocalyptic number.

2102101122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102101122220 is an abundant number, since it is smaller than the sum of its proper divisors (2953223703380).

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

2102101122220 is a wasteful number, since it uses less digits than its factorization.

2102101122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5224279 (or 5224277 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2102101122220 its reverse (222211012012), we get a palindrome (2324312134232).

The spelling of 2102101122220 in words is "two trillion, one hundred two billion, one hundred one million, one hundred twenty-two thousand, two hundred twenty".