2120122121012 has 36 divisors (see below), whose sum is σ = 4316189737860. Its totient is φ = 908576008704.

The previous prime is 2120122121011. The next prime is 2120122121059. The reversal of 2120122121012 is 2101212210212.

It can be written as a sum of positive squares in 2 ways, for example, as 724803633316 + 1395318487696 = 851354^2 + 1181236^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120122121011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3588548 + ... + 4137380.

It is an arithmetic number, because the mean of its divisors is an integer number (119894159385).

Almost surely, 2^{2120122121012} is an apocalyptic number.

It is an amenable number.

2120122121012 is an abundant number, since it is smaller than the sum of its proper divisors (2196067616848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2120122121012 is a wasteful number, since it uses less digits than its factorization.

2120122121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568560 (or 568551 counting only the distinct ones).

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

Adding to 2120122121012 its reverse (2101212210212), we get a palindrome (4221334331224).

The spelling of 2120122121012 in words is "two trillion, one hundred twenty billion, one hundred twenty-two million, one hundred twenty-one thousand, twelve".