121200222012 has 48 divisors (see below), whose sum is σ = 290491343520. Its totient is φ = 39301742592.

The previous prime is 121200221999. The next prime is 121200222023. The reversal of 121200222012 is 210222002121.

It is a junction number, because it is equal to n+sod(n) for n = 121200221982 and 121200222000.

It is a congruent number.

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, 3221164 + ... + 3258572.

It is an arithmetic number, because the mean of its divisors is an integer number (6051902990).

Almost surely, 2^121200222012 is an apocalyptic number.

121200222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121200222012 is an abundant number, since it is smaller than the sum of its proper divisors (169291121508).

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

121200222012 is a wasteful number, since it uses less digits than its factorization.

121200222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44750 (or 44748 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 121200222012 its reverse (210222002121), we get a palindrome (331422224133).

The spelling of 121200222012 in words is "one hundred twenty-one billion, two hundred million, two hundred twenty-two thousand, twelve".