2120121221122 has 4 divisors (see below), whose sum is σ = 3180181831686. Its totient is φ = 1060060610560.

The previous prime is 2120121221089. The next prime is 2120121221147. The reversal of 2120121221122 is 2211221210212.

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

It can be written as a sum of positive squares in only one way, i.e., 1685736092881 + 434385128241 = 1298359^2 + 659079^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2120121221122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530030305279 + ... + 530030305282.

Almost surely, 2^{2120121221122} is an apocalyptic number.

2120121221122 is a deficient number, since it is larger than the sum of its proper divisors (1060060610564).

2120121221122 is a wasteful number, since it uses less digits than its factorization.

2120121221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060060610563.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2120121221122 its reverse (2211221210212), we get a palindrome (4331342431334).

The spelling of 2120121221122 in words is "two trillion, one hundred twenty billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty-two".