2120311310122 has 4 divisors (see below), whose sum is σ = 3180466965186. Its totient is φ = 1060155655060.

The previous prime is 2120311310083. The next prime is 2120311310129. The reversal of 2120311310122 is 2210131130212.

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., 1252248283521 + 868063026601 = 1119039^2 + 931699^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2120311310122.

It is not an unprimeable number, because it can be changed into a prime (2120311310129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530077827529 + ... + 530077827532.

Almost surely, 2^{2120311310122} is an apocalyptic number.

2120311310122 is a deficient number, since it is larger than the sum of its proper divisors (1060155655064).

2120311310122 is a wasteful number, since it uses less digits than its factorization.

2120311310122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060155655063.

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

Adding to 2120311310122 its reverse (2210131130212), we get a palindrome (4330442440334).

The spelling of 2120311310122 in words is "two trillion, one hundred twenty billion, three hundred eleven million, three hundred ten thousand, one hundred twenty-two".