1201121202112 has 140 divisors (see below), whose sum is σ = 2588759211600. Its totient is φ = 552933648384.

The previous prime is 1201121202101. The next prime is 1201121202191. The reversal of 1201121202112 is 2112021211021.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1094913948 + ... + 1094915044.

Almost surely, 2^{1201121202112} 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 1201121202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294379605800).

1201121202112 is an abundant number, since it is smaller than the sum of its proper divisors (1387638009488).

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

1201121202112 is an frugal number, since it uses more digits than its factorization.

1201121202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760 (or 1711 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1201121202112 its reverse (2112021211021), we get a palindrome (3313142413133).

The spelling of 1201121202112 in words is "one trillion, two hundred one billion, one hundred twenty-one million, two hundred two thousand, one hundred twelve".