1210000121122 has 16 divisors (see below), whose sum is σ = 1954653112440. Its totient is φ = 558450870912.

The previous prime is 1210000121089. The next prime is 1210000121123. The reversal of 1210000121122 is 2211210000121.

It can be written as a sum of positive squares in 4 ways, for example, as 347945437161 + 862054683961 = 589869^2 + 928469^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (1210000121123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1024708 + ... + 1862800.

Almost surely, 2^{1210000121122} is an apocalyptic number.

1210000121122 is a deficient number, since it is larger than the sum of its proper divisors (744652991318).

1210000121122 is a wasteful number, since it uses less digits than its factorization.

1210000121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893637.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1210000121122 its reverse (2211210000121), we get a palindrome (3421210121243).

The spelling of 1210000121122 in words is "one trillion, two hundred ten billion, one hundred twenty-one thousand, one hundred twenty-two".