1331207226128 has 40 divisors (see below), whose sum is σ = 2777780544000. Its totient is φ = 614366734464.

The previous prime is 1331207226101. The next prime is 1331207226149. The reversal of 1331207226128 is 8216227021331.

It is a super-2 number, since 2×1331207226128² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1331207226091 and 1331207226100.

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, 3478763 + ... + 3842421.

It is an arithmetic number, because the mean of its divisors is an integer number (69444513600).

Almost surely, 2^{1331207226128} is an apocalyptic number.

It is an amenable number.

1331207226128 is an abundant number, since it is smaller than the sum of its proper divisors (1446573317872).

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

1331207226128 is a wasteful number, since it uses less digits than its factorization.

1331207226128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381279 (or 381273 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 1331207226128 in words is "one trillion, three hundred thirty-one billion, two hundred seven million, two hundred twenty-six thousand, one hundred twenty-eight".