12122121011012 has 6 divisors (see below), whose sum is σ = 21213711769278. Its totient is φ = 6061060505504.

The previous prime is 12122121010999. The next prime is 12122121011101. The reversal of 12122121011012 is 21011012122121.

It can be written as a sum of positive squares in only one way, i.e., 6528924390976 + 5593196620036 = 2555176^2 + 2364994^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515265126373 + ... + 1515265126380.

It is an arithmetic number, because the mean of its divisors is an integer number (3535618628213).

Almost surely, 2^{12122121011012} is an apocalyptic number.

It is an amenable number.

12122121011012 is a deficient number, since it is larger than the sum of its proper divisors (9091590758266).

12122121011012 is a wasteful number, since it uses less digits than its factorization.

12122121011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030530252757 (or 3030530252755 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12122121011012 its reverse (21011012122121), we get a palindrome (33133133133133).

The spelling of 12122121011012 in words is "twelve trillion, one hundred twenty-two billion, one hundred twenty-one million, eleven thousand, twelve".