121211010212192 has 24 divisors (see below), whose sum is σ = 239883569960832. Its totient is φ = 60288198793600.

The previous prime is 121211010212189. The next prime is 121211010212203. The reversal of 121211010212192 is 291212010112121.

It is a super-2 number, since 2×121211010212192² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9915816059 + ... + 9915828282.

It is an arithmetic number, because the mean of its divisors is an integer number (9995148748368).

Almost surely, 2^{121211010212192} is an apocalyptic number.

It is an amenable number.

121211010212192 is a deficient number, since it is larger than the sum of its proper divisors (118672559748640).

121211010212192 is a wasteful number, since it uses less digits than its factorization.

121211010212192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19831644542 (or 19831644534 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 26.

The spelling of 121211010212192 in words is "one hundred twenty-one trillion, two hundred eleven billion, ten million, two hundred twelve thousand, one hundred ninety-two".