1200012201121 has 8 divisors (see below), whose sum is σ = 1258542926784. Its totient is φ = 1142011165680.

The previous prime is 1200012201109. The next prime is 1200012201127. The reversal of 1200012201121 is 1211022100021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200012201121 - 2³⁹ = 650256387233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200012201127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132417915 + ... + 132426976.

It is an arithmetic number, because the mean of its divisors is an integer number (157317865848).

Almost surely, 2^{1200012201121} is an apocalyptic number.

It is an amenable number.

1200012201121 is a deficient number, since it is larger than the sum of its proper divisors (58530725663).

1200012201121 is a wasteful number, since it uses less digits than its factorization.

1200012201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264845111.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1200012201121 its reverse (1211022100021), we get a palindrome (2411034301142).

The spelling of 1200012201121 in words is "one trillion, two hundred billion, twelve million, two hundred one thousand, one hundred twenty-one".