2947268331121 has 3 divisors (see below), whose sum is σ = 2947270047883. Its totient is φ = 2947266614360.

The previous prime is 2947268331113. The next prime is 2947268331149. The reversal of 2947268331121 is 1211338627492.

The square root of 2947268331121 is 1716761.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 2514409604721 + 432858726400 = 1585689^2 + 657920^2 .

It is not a de Polignac number, because 2947268331121 - 2³ = 2947268331113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2947268331181) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 858381 + ... + 2575141.

Almost surely, 2^{2947268331121} is an apocalyptic number.

2947268331121 is the 1716761-st square number.

2947268331121 is the 858381-st centered octagonal number.

It is an amenable number.

2947268331121 is a deficient number, since it is larger than the sum of its proper divisors (1716762).

2947268331121 is an frugal number, since it uses more digits than its factorization.

2947268331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3433522 (or 1716761 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

Multiplying 2947268331121 by its sum of digits (49), we get a square (144416148224929 = 12017327²).

The spelling of 2947268331121 in words is "two trillion, nine hundred forty-seven billion, two hundred sixty-eight million, three hundred thirty-one thousand, one hundred twenty-one".