771121002121112 has 8 divisors (see below), whose sum is σ = 1445851878977100. Its totient is φ = 385560501060552.

The previous prime is 771121002121073. The next prime is 771121002121139. The reversal of 771121002121112 is 211121200121177.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×771121002121112² (a number of 31 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 as a sum of consecutive naturals, namely, 48195062632562 + ... + 48195062632577.

Almost surely, 2^{771121002121112} is an apocalyptic number.

It is an amenable number.

771121002121112 is a deficient number, since it is larger than the sum of its proper divisors (674730876855988).

771121002121112 is a wasteful number, since it uses less digits than its factorization.

771121002121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96390125265145 (or 96390125265141 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 29.

Adding to 771121002121112 its reverse (211121200121177), we get a palindrome (982242202242289).

The spelling of 771121002121112 in words is "seven hundred seventy-one trillion, one hundred twenty-one billion, two million, one hundred twenty-one thousand, one hundred twelve".