1200022121211 has 8 divisors (see below), whose sum is σ = 1643273535504. Its totient is φ = 778392727200.

The previous prime is 1200022121167. The next prime is 1200022121237. The reversal of 1200022121211 is 1121212200021.

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

It is not a de Polignac number, because 1200022121211 - 2⁷ = 1200022121083 is a prime.

It is a super-2 number, since 2×1200022121211² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1200022121281) 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, 5405504940 + ... + 5405505161.

It is an arithmetic number, because the mean of its divisors is an integer number (205409191938).

Almost surely, 2^{1200022121211} is an apocalyptic number.

1200022121211 is a deficient number, since it is larger than the sum of its proper divisors (443251414293).

1200022121211 is a wasteful number, since it uses less digits than its factorization.

1200022121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10811010141.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1200022121211 its reverse (1121212200021), we get a palindrome (2321234321232).

The spelling of 1200022121211 in words is "one trillion, two hundred billion, twenty-two million, one hundred twenty-one thousand, two hundred eleven".