1077722077221 has 48 divisors (see below), whose sum is σ = 1629260505600. Its totient is φ = 685621915776.

The previous prime is 1077722077217. The next prime is 1077722077241. The reversal of 1077722077221 is 1227702277701.

It is a happy number.

It is not a de Polignac number, because 1077722077221 - 2² = 1077722077217 is a prime.

It is a super-2 number, since 2×1077722077221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1077722077241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8023611 + ... + 8156823.

It is an arithmetic number, because the mean of its divisors is an integer number (33942927200).

Almost surely, 2^{1077722077221} is an apocalyptic number.

It is an amenable number.

1077722077221 is a deficient number, since it is larger than the sum of its proper divisors (551538428379).

1077722077221 is a wasteful number, since it uses less digits than its factorization.

1077722077221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133610 (or 133607 counting only the distinct ones).

The product of its (nonzero) digits is 268912, while the sum is 45.

The spelling of 1077722077221 in words is "one trillion, seventy-seven billion, seven hundred twenty-two million, seventy-seven thousand, two hundred twenty-one".