121100222021012 has 48 divisors (see below), whose sum is σ = 233800246184400. Its totient is φ = 54527691632640.

The previous prime is 121100222020933. The next prime is 121100222021057. The reversal of 121100222021012 is 210120222001121.

It can be written as a sum of positive squares in 8 ways, for example, as 38188889840656 + 82911332180356 = 6179716^2 + 9105566^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79255064 + ... + 80768592.

It is an arithmetic number, because the mean of its divisors is an integer number (4870838462175).

Almost surely, 2^{121100222021012} is an apocalyptic number.

It is an amenable number.

121100222021012 is a deficient number, since it is larger than the sum of its proper divisors (112700024163388).

121100222021012 is a wasteful number, since it uses less digits than its factorization.

121100222021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551116 (or 1551114 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121100222021012 its reverse (210120222001121), we get a palindrome (331220444022133).

The spelling of 121100222021012 in words is "one hundred twenty-one trillion, one hundred billion, two hundred twenty-two million, twenty-one thousand, twelve".