121212112211012 has 12 divisors (see below), whose sum is σ = 212124292559676. Its totient is φ = 60605171479680.

The previous prime is 121212112210997. The next prime is 121212112211059. The reversal of 121212112211012 is 210112211212121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68411194463236 + 52800917747776 = 8271106^2 + 7266424^2 .

It is a super-2 number, since 2×121212112211012² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220848113 + ... + 221396280.

It is an arithmetic number, because the mean of its divisors is an integer number (17677024379973).

Almost surely, 2^{121212112211012} is an apocalyptic number.

It is an amenable number.

121212112211012 is a deficient number, since it is larger than the sum of its proper divisors (90912180348664).

121212112211012 is a wasteful number, since it uses less digits than its factorization.

121212112211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442312918 (or 442312916 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 121212112211012 its reverse (210112211212121), we get a palindrome (331324323423133).

The spelling of 121212112211012 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred twelve million, two hundred eleven thousand, twelve".