1221122130201 has 16 divisors (see below), whose sum is σ = 1809986814720. Its totient is φ = 813668773680.

The previous prime is 1221122130119. The next prime is 1221122130211. The reversal of 1221122130201 is 1020312211221.

1221122130201 is a `hidden beast` number, since 1 + 2 + 211 + 221 + 30 + 201 = 666.

It is not a de Polignac number, because 1221122130201 - 2¹⁴ = 1221122113817 is a prime.

It is a super-2 number, since 2×1221122130201² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1221122130211) 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, 11408145 + ... + 11514686.

It is an arithmetic number, because the mean of its divisors is an integer number (113124175920).

Almost surely, 2^{1221122130201} is an apocalyptic number.

It is an amenable number.

1221122130201 is a deficient number, since it is larger than the sum of its proper divisors (588864684519).

1221122130201 is a wasteful number, since it uses less digits than its factorization.

1221122130201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22924813 (or 22924807 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1221122130201 its reverse (1020312211221), we get a palindrome (2241434341422).

The spelling of 1221122130201 in words is "one trillion, two hundred twenty-one billion, one hundred twenty-two million, one hundred thirty thousand, two hundred one".