1200022020111 has 16 divisors (see below), whose sum is σ = 1655496576000. Its totient is φ = 772290865248.

The previous prime is 1200022020031. The next prime is 1200022020133. The reversal of 1200022020111 is 1110202200021.

It is a de Polignac number, because none of the positive numbers 2^k-1200022020111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200022020151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 730011 + ... + 1712588.

It is an arithmetic number, because the mean of its divisors is an integer number (103468536000).

Almost surely, 2^{1200022020111} is an apocalyptic number.

1200022020111 is a deficient number, since it is larger than the sum of its proper divisors (455474555889).

1200022020111 is a wasteful number, since it uses less digits than its factorization.

1200022020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2448278.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1200022020111 its reverse (1110202200021), we get a palindrome (2310224220132).

The spelling of 1200022020111 in words is "one trillion, two hundred billion, twenty-two million, twenty thousand, one hundred eleven".