2121941436 has 24 divisors (see below), whose sum is σ = 4954220544. Its totient is φ = 706881840.

The previous prime is 2121941417. The next prime is 2121941447. The reversal of 2121941436 is 6341491212.

It is a junction number, because it is equal to n+sod(n) for n = 2121941397 and 2121941406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33210 + ... + 73121.

It is an arithmetic number, because the mean of its divisors is an integer number (206425856).

Almost surely, 2^2121941436 is an apocalyptic number.

It is an amenable number.

2121941436 is an abundant number, since it is smaller than the sum of its proper divisors (2832279108).

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

2121941436 is a wasteful number, since it uses less digits than its factorization.

2121941436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108001 (or 107999 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 2121941436 is about 46064.5355561087. The cubic root of 2121941436 is about 1285.0236811737.

The spelling of 2121941436 in words is "two billion, one hundred twenty-one million, nine hundred forty-one thousand, four hundred thirty-six".