121211110212000 has 96 divisors (see below), whose sum is σ = 397087597093824. Its totient is φ = 32322962720000.

The previous prime is 121211110211981. The next prime is 121211110212011. The reversal of 121211110212000 is 212011112121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×121211110212000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 5050450926 + ... + 5050474925.

It is an arithmetic number, because the mean of its divisors is an integer number (4136329136394).

Almost surely, 2^{121211110212000} is an apocalyptic number.

121211110212000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121211110212000 is an abundant number, since it is smaller than the sum of its proper divisors (275876486881824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121211110212000 is a wasteful number, since it uses less digits than its factorization.

121211110212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10100925879 (or 10100925861 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121211110212000 its reverse (212011112121), we get a palindrome (121423121324121).

The spelling of 121211110212000 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred ten million, two hundred twelve thousand".