2130310221221 has 16 divisors (see below), whose sum is σ = 2647375820544. Its totient is φ = 1669155894144.

The previous prime is 2130310221211. The next prime is 2130310221227. The reversal of 2130310221221 is 1221220130312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2130310221221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2130310221193 and 2130310221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130310221227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113631416 + ... + 113650161.

It is an arithmetic number, because the mean of its divisors is an integer number (165460988784).

Almost surely, 2^{2130310221221} is an apocalyptic number.

It is an amenable number.

2130310221221 is a deficient number, since it is larger than the sum of its proper divisors (517065599323).

2130310221221 is a wasteful number, since it uses less digits than its factorization.

2130310221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227281700.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2130310221221 its reverse (1221220130312), we get a palindrome (3351530351533).

Subtracting from 2130310221221 its reverse (1221220130312), we obtain a palindrome (909090090909).

The spelling of 2130310221221 in words is "two trillion, one hundred thirty billion, three hundred ten million, two hundred twenty-one thousand, two hundred twenty-one".