227778062121 has 45 divisors (see below), whose sum is σ = 359240797773. Its totient is φ = 143808284520.

The previous prime is 227778062107. The next prime is 227778062167. The reversal of 227778062121 is 121260877722.

The square root of 227778062121 is 477261.

It is a perfect power (a square), and thus also a powerful number.

It is a de Polignac number, because none of the positive numbers 2^k-227778062121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (227778062101) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 81610236 + ... + 81613026.

Almost surely, 2^227778062121 is an apocalyptic number.

227778062121 is the 477261-st square number.

227778062121 is the 238631-st centered octagonal number.

It is an amenable number.

227778062121 is a deficient number, since it is larger than the sum of its proper divisors (131462735652).

227778062121 is an frugal number, since it uses more digits than its factorization.

227778062121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5632 (or 2813 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The spelling of 227778062121 in words is "two hundred twenty-seven billion, seven hundred seventy-eight million, sixty-two thousand, one hundred twenty-one".