2115421102 has 4 divisors (see below), whose sum is σ = 3173131656. Its totient is φ = 1057710550.

The previous prime is 2115421081. The next prime is 2115421127. The reversal of 2115421102 is 2011245112.

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 2115421102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528855274 + ... + 528855277.

It is an arithmetic number, because the mean of its divisors is an integer number (793282914).

Almost surely, 2^2115421102 is an apocalyptic number.

2115421102 is a deficient number, since it is larger than the sum of its proper divisors (1057710554).

2115421102 is a wasteful number, since it uses less digits than its factorization.

2115421102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057710553.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 2115421102 is about 45993.7072000073. The cubic root of 2115421102 is about 1283.7061172534.

Adding to 2115421102 its reverse (2011245112), we get a palindrome (4126666214).

The spelling of 2115421102 in words is "two billion, one hundred fifteen million, four hundred twenty-one thousand, one hundred two".