1222101121011 has 4 divisors (see below), whose sum is σ = 1629468161352. Its totient is φ = 814734080672.

The previous prime is 1222101120973. The next prime is 1222101121069. The reversal of 1222101121011 is 1101211012221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1222101121011 - 2¹⁷ = 1222100989939 is a prime.

It is a super-2 number, since 2×1222101121011² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222101121081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203683520166 + ... + 203683520171.

It is an arithmetic number, because the mean of its divisors is an integer number (407367040338).

Almost surely, 2^{1222101121011} is an apocalyptic number.

1222101121011 is a deficient number, since it is larger than the sum of its proper divisors (407367040341).

1222101121011 is an equidigital number, since it uses as much as digits as its factorization.

1222101121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407367040340.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1222101121011 its reverse (1101211012221), we get a palindrome (2323312133232).

The spelling of 1222101121011 in words is "one trillion, two hundred twenty-two billion, one hundred one million, one hundred twenty-one thousand, eleven".