2721121177234 has 36 divisors (see below), whose sum is σ = 4366553189886. Its totient is φ = 1267396480000.

The previous prime is 2721121177219. The next prime is 2721121177261. The reversal of 2721121177234 is 4327711211272.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 2240036055625 + 481085121609 = 1496675^2 + 693603^2 .

It is a super-2 number, since 2×2721121177234² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 971480634 + ... + 971483434.

Almost surely, 2^{2721121177234} is an apocalyptic number.

2721121177234 is a deficient number, since it is larger than the sum of its proper divisors (1645432012652).

2721121177234 is an frugal number, since it uses more digits than its factorization.

2721121177234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5823 (or 2921 counting only the distinct ones).

The product of its digits is 65856, while the sum is 40.

The spelling of 2721121177234 in words is "two trillion, seven hundred twenty-one billion, one hundred twenty-one million, one hundred seventy-seven thousand, two hundred thirty-four".