1211210000120 has 32 divisors (see below), whose sum is σ = 2791691345520. Its totient is φ = 472667316480.

The previous prime is 1211210000107. The next prime is 1211210000149. The reversal of 1211210000120 is 210000121121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369269702 + ... + 369272981.

Almost surely, 2^{1211210000120} is an apocalyptic number.

1211210000120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211210000120 is an abundant number, since it is smaller than the sum of its proper divisors (1580481345400).

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

1211210000120 is a wasteful number, since it uses less digits than its factorization.

1211210000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738542735 (or 738542731 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1211210000120 its reverse (210000121121), we get a palindrome (1421210121241).

The spelling of 1211210000120 in words is "one trillion, two hundred eleven billion, two hundred ten million, one hundred twenty", and thus it is an aban number.