2121421234204 has 12 divisors (see below), whose sum is σ = 3714211507104. Its totient is φ = 1060217946464.

The previous prime is 2121421234169. The next prime is 2121421234217. The reversal of 2121421234204 is 4024321241212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123157972 + ... + 123175195.

It is an arithmetic number, because the mean of its divisors is an integer number (309517625592).

Almost surely, 2^{2121421234204} is an apocalyptic number.

It is an amenable number.

2121421234204 is a deficient number, since it is larger than the sum of its proper divisors (1592790272900).

2121421234204 is a wasteful number, since it uses less digits than its factorization.

2121421234204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246335324 (or 246335322 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 2121421234204 its reverse (4024321241212), we get a palindrome (6145742475416).

The spelling of 2121421234204 in words is "two trillion, one hundred twenty-one billion, four hundred twenty-one million, two hundred thirty-four thousand, two hundred four".