121001401142 has 16 divisors (see below), whose sum is σ = 182605646160. Its totient is φ = 60133754208.

The previous prime is 121001401141. The next prime is 121001401153. The reversal of 121001401142 is 241104100121.

It is a self number, because there is not a number n which added to its sum of digits gives 121001401142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001401141) 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, 43808 + ... + 493884.

It is an arithmetic number, because the mean of its divisors is an integer number (11412852885).

Almost surely, 2^121001401142 is an apocalyptic number.

121001401142 is a deficient number, since it is larger than the sum of its proper divisors (61604245018).

121001401142 is a wasteful number, since it uses less digits than its factorization.

121001401142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450895.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121001401142 its reverse (241104100121), we get a palindrome (362105501263).

The spelling of 121001401142 in words is "one hundred twenty-one billion, one million, four hundred one thousand, one hundred forty-two".