2101211222102 has 4 divisors (see below), whose sum is σ = 3151816833156. Its totient is φ = 1050605611050.

The previous prime is 2101211222101. The next prime is 2101211222119. The reversal of 2101211222102 is 2012221121012.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101211222101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525302805524 + ... + 525302805527.

It is an arithmetic number, because the mean of its divisors is an integer number (787954208289).

Almost surely, 2^{2101211222102} is an apocalyptic number.

2101211222102 is a deficient number, since it is larger than the sum of its proper divisors (1050605611054).

2101211222102 is a wasteful number, since it uses less digits than its factorization.

2101211222102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050605611053.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2101211222102 its reverse (2012221121012), we get a palindrome (4113432343114).

The spelling of 2101211222102 in words is "two trillion, one hundred one billion, two hundred eleven million, two hundred twenty-two thousand, one hundred two".