121010111042 has 32 divisors (see below), whose sum is σ = 195835536432. Its totient is φ = 55874617344.

The previous prime is 121010111023. The next prime is 121010111051. The reversal of 121010111042 is 240111010121.

It can be written as a sum of positive squares in 8 ways, for example, as 37148322121 + 83861788921 = 192739^2 + 289589^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352718 + ... + 605334.

Almost surely, 2^121010111042 is an apocalyptic number.

121010111042 is a deficient number, since it is larger than the sum of its proper divisors (74825425390).

121010111042 is a wasteful number, since it uses less digits than its factorization.

121010111042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252902.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121010111042 its reverse (240111010121), we get a palindrome (361121121163).

The spelling of 121010111042 in words is "one hundred twenty-one billion, ten million, one hundred eleven thousand, forty-two".