2101102020220 has 48 divisors (see below), whose sum is σ = 5091602600448. Its totient is φ = 713383871040.

The previous prime is 2101102020203. The next prime is 2101102020263. The reversal of 2101102020220 is 220202011012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101102020220.

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, 72839326 + ... + 72868165.

It is an arithmetic number, because the mean of its divisors is an integer number (106075054176).

Almost surely, 2^{2101102020220} is an apocalyptic number.

2101102020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101102020220 is an abundant number, since it is smaller than the sum of its proper divisors (2990500580228).

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

2101102020220 is a wasteful number, since it uses less digits than its factorization.

2101102020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145707610 (or 145707608 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2101102020220 its reverse (220202011012), we get a palindrome (2321304031232).

The spelling of 2101102020220 in words is "two trillion, one hundred one billion, one hundred two million, twenty thousand, two hundred twenty".