2121203113102 has 4 divisors (see below), whose sum is σ = 3181804669656. Its totient is φ = 1060601556550.

The previous prime is 2121203113097. The next prime is 2121203113103. The reversal of 2121203113102 is 2013113021212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2121203113102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121203113103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530300778274 + ... + 530300778277.

It is an arithmetic number, because the mean of its divisors is an integer number (795451167414).

Almost surely, 2^{2121203113102} is an apocalyptic number.

2121203113102 is a deficient number, since it is larger than the sum of its proper divisors (1060601556554).

2121203113102 is a wasteful number, since it uses less digits than its factorization.

2121203113102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060601556553.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2121203113102 its reverse (2013113021212), we get a palindrome (4134316134314).

The spelling of 2121203113102 in words is "two trillion, one hundred twenty-one billion, two hundred three million, one hundred thirteen thousand, one hundred two".