121100222212 has 6 divisors (see below), whose sum is σ = 211925388878. Its totient is φ = 60550111104.

The previous prime is 121100222183. The next prime is 121100222213. The reversal of 121100222212 is 212222001121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 99840832576 + 21259389636 = 315976^2 + 145806^2 .

It is not an unprimeable number, because it can be changed into a prime (121100222213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15137527773 + ... + 15137527780.

Almost surely, 2^121100222212 is an apocalyptic number.

It is an amenable number.

121100222212 is a deficient number, since it is larger than the sum of its proper divisors (90825166666).

121100222212 is a wasteful number, since it uses less digits than its factorization.

121100222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30275055557 (or 30275055555 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121100222212 its reverse (212222001121), we get a palindrome (333322223333).

The spelling of 121100222212 in words is "one hundred twenty-one billion, one hundred million, two hundred twenty-two thousand, two hundred twelve".