1212210120924 has 144 divisors (see below), whose sum is σ = 3394020180096. Its totient is φ = 361707984000.

The previous prime is 1212210120923. The next prime is 1212210120973. The reversal of 1212210120924 is 4290210122121.

It is a super-2 number, since 2×1212210120924² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212210120923) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78447399 + ... + 78462849.

It is an arithmetic number, because the mean of its divisors is an integer number (23569584584).

Almost surely, 2^{1212210120924} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212210120924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1697010090048).

1212210120924 is an abundant number, since it is smaller than the sum of its proper divisors (2181810059172).

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

1212210120924 is a wasteful number, since it uses less digits than its factorization.

1212210120924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18496 (or 18491 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 1212210120924 in words is "one trillion, two hundred twelve billion, two hundred ten million, one hundred twenty thousand, nine hundred twenty-four".