121111229972 has 12 divisors (see below), whose sum is σ = 212831451840. Its totient is φ = 60302243736.

The previous prime is 121111229963. The next prime is 121111229977. The reversal of 121111229972 is 279922111121.

It is a super-2 number, since 2×121111229972² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121111229977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63341738 + ... + 63343649.

It is an arithmetic number, because the mean of its divisors is an integer number (17735954320).

Almost surely, 2^121111229972 is an apocalyptic number.

It is an amenable number.

121111229972 is a deficient number, since it is larger than the sum of its proper divisors (91720221868).

121111229972 is a wasteful number, since it uses less digits than its factorization.

121111229972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126685630 (or 126685628 counting only the distinct ones).

The product of its digits is 9072, while the sum is 38.

The spelling of 121111229972 in words is "one hundred twenty-one billion, one hundred eleven million, two hundred twenty-nine thousand, nine hundred seventy-two".