1222121201011 has 16 divisors (see below), whose sum is σ = 1265763252096. Its totient is φ = 1179164800000.

The previous prime is 1222121200981. The next prime is 1222121201033. The reversal of 1222121201011 is 1101021212221.

It is a cyclic number.

It is not a de Polignac number, because 1222121201011 - 2¹⁹ = 1222120676723 is a prime.

It is a super-3 number, since 3×1222121201011³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1292121201011) 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, 3480726 + ... + 3815716.

It is an arithmetic number, because the mean of its divisors is an integer number (79110203256).

Almost surely, 2^{1222121201011} is an apocalyptic number.

1222121201011 is a deficient number, since it is larger than the sum of its proper divisors (43642051085).

1222121201011 is a wasteful number, since it uses less digits than its factorization.

1222121201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336014.

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

Adding to 1222121201011 its reverse (1101021212221), we get a palindrome (2323142413232).

The spelling of 1222121201011 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred one thousand, eleven".