121100021122 has 12 divisors (see below), whose sum is σ = 183542046930. Its totient is φ = 59925774336.

The previous prime is 121100021093. The next prime is 121100021143. The reversal of 121100021122 is 221120001121.

It can be written as a sum of positive squares in 3 ways, for example, as 65280761001 + 55819260121 = 255501^2 + 236261^2 .

It is a super-2 number, since 2×121100021122² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3198847 + ... + 3236482.

Almost surely, 2^121100021122 is an apocalyptic number.

121100021122 is a deficient number, since it is larger than the sum of its proper divisors (62442025808).

121100021122 is an frugal number, since it uses more digits than its factorization.

121100021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6435525 (or 6435428 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121100021122 its reverse (221120001121), we get a palindrome (342220022243).

The spelling of 121100021122 in words is "one hundred twenty-one billion, one hundred million, twenty-one thousand, one hundred twenty-two".