121113021020442 has 64 divisors (see below), whose sum is σ = 266825387851776. Its totient is φ = 36342784791360.

The previous prime is 121113021020413. The next prime is 121113021020501. The reversal of 121113021020442 is 244020120311121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139217688 + ... + 140084940.

It is an arithmetic number, because the mean of its divisors is an integer number (4169146685184).

Almost surely, 2^{121113021020442} is an apocalyptic number.

121113021020442 is an abundant number, since it is smaller than the sum of its proper divisors (145712366831334).

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

121113021020442 is a wasteful number, since it uses less digits than its factorization.

121113021020442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887915.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 121113021020442 its reverse (244020120311121), we get a palindrome (365133141331563).

The spelling of 121113021020442 in words is "one hundred twenty-one trillion, one hundred thirteen billion, twenty-one million, twenty thousand, four hundred forty-two".