2101211021102 has 16 divisors (see below), whose sum is σ = 3156983193840. Its totient is φ = 1048884173568.

The previous prime is 2101211021101. The next prime is 2101211021113. The reversal of 2101211021102 is 2011201121012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101211021101) 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, 4578893 + ... + 5016839.

It is an arithmetic number, because the mean of its divisors is an integer number (197311449615).

Almost surely, 2^{2101211021102} is an apocalyptic number.

2101211021102 is a deficient number, since it is larger than the sum of its proper divisors (1055772172738).

2101211021102 is a wasteful number, since it uses less digits than its factorization.

2101211021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441875.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2101211021102 its reverse (2011201121012), we get a palindrome (4112412142114).

The spelling of 2101211021102 in words is "two trillion, one hundred one billion, two hundred eleven million, twenty-one thousand, one hundred two".