2201021012100 has 72 divisors (see below), whose sum is σ = 6503782981248. Its totient is φ = 574450870400.

The previous prime is 2201021012077. The next prime is 2201021012107. The reversal of 2201021012100 is 12101201022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (2201021012107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78036291 + ... + 78064490.

It is an arithmetic number, because the mean of its divisors is an integer number (90330319184).

Almost surely, 2^{2201021012100} is an apocalyptic number.

2201021012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2201021012100 is an abundant number, since it is smaller than the sum of its proper divisors (4302761969148).

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

2201021012100 is a wasteful number, since it uses less digits than its factorization.

2201021012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156100845 (or 156100838 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2201021012100 its reverse (12101201022), we get a palindrome (2213122213122).

The spelling of 2201021012100 in words is "two trillion, two hundred one billion, twenty-one million, twelve thousand, one hundred".