1021112120122 has 4 divisors (see below), whose sum is σ = 1531668180186. Its totient is φ = 510556060060.

The previous prime is 1021112120107. The next prime is 1021112120129. The reversal of 1021112120122 is 2210212111201.

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., 963261768681 + 57850351441 = 981459^2 + 240521^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1021112120096 and 1021112120105.

It is not an unprimeable number, because it can be changed into a prime (1021112120129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255278030029 + ... + 255278030032.

Almost surely, 2^{1021112120122} is an apocalyptic number.

1021112120122 is a deficient number, since it is larger than the sum of its proper divisors (510556060064).

1021112120122 is an equidigital number, since it uses as much as digits as its factorization.

1021112120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510556060063.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1021112120122 its reverse (2210212111201), we get a palindrome (3231324231323).

The spelling of 1021112120122 in words is "one trillion, twenty-one billion, one hundred twelve million, one hundred twenty thousand, one hundred twenty-two".