121121120021012 has 24 divisors (see below), whose sum is σ = 215437415159400. Its totient is φ = 59567578997760.

The previous prime is 121121120020969. The next prime is 121121120021059. The reversal of 121121120021012 is 210120021121121.

It can be written as a sum of positive squares in 4 ways, for example, as 1478082103696 + 119643037917316 = 1215764^2 + 10938146^2 .

It is a congruent number.

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, 111320168 + ... + 112402944.

It is an arithmetic number, because the mean of its divisors is an integer number (8976558964975).

Almost surely, 2^{121121120021012} is an apocalyptic number.

It is an amenable number.

121121120021012 is a deficient number, since it is larger than the sum of its proper divisors (94316295138388).

121121120021012 is a wasteful number, since it uses less digits than its factorization.

121121120021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541291 (or 1541289 counting only the distinct ones).

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

Adding to 121121120021012 its reverse (210120021121121), we get a palindrome (331241141142133).

The spelling of 121121120021012 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred twenty million, twenty-one thousand, twelve".