2150121205042 has 32 divisors (see below), whose sum is σ = 3412369296000. Its totient is φ = 1014068592768.

The previous prime is 2150121205033. The next prime is 2150121205049. The reversal of 2150121205042 is 2405021210512.

It is a junction number, because it is equal to n+sod(n) for n = 2150121204998 and 2150121205016.

It is not an unprimeable number, because it can be changed into a prime (2150121205049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175723 + ... + 2081134.

It is an arithmetic number, because the mean of its divisors is an integer number (106636540500).

Almost surely, 2^{2150121205042} is an apocalyptic number.

2150121205042 is a deficient number, since it is larger than the sum of its proper divisors (1262248090958).

2150121205042 is a wasteful number, since it uses less digits than its factorization.

2150121205042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257170.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 2150121205042 its reverse (2405021210512), we get a palindrome (4555142415554).

The spelling of 2150121205042 in words is "two trillion, one hundred fifty billion, one hundred twenty-one million, two hundred five thousand, forty-two".