2100621102 has 16 divisors (see below), whose sum is σ = 4290630912. Its totient is φ = 685308920.

The previous prime is 2100621097. The next prime is 2100621109. The reversal of 2100621102 is 2011260012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100621109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3724224 + ... + 3724787.

It is an arithmetic number, because the mean of its divisors is an integer number (268164432).

Almost surely, 2^2100621102 is an apocalyptic number.

2100621102 is an abundant number, since it is smaller than the sum of its proper divisors (2190009810).

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

2100621102 is a wasteful number, since it uses less digits than its factorization.

2100621102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7449063.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2100621102 is about 45832.5332269557. The cubic root of 2100621102 is about 1280.7054017938.

Adding to 2100621102 its reverse (2011260012), we get a palindrome (4111881114).

The spelling of 2100621102 in words is "two billion, one hundred million, six hundred twenty-one thousand, one hundred two".