1201120122221 has 16 divisors (see below), whose sum is σ = 1254351147840. Its totient is φ = 1148680108800.

The previous prime is 1201120122211. The next prime is 1201120122233. The reversal of 1201120122221 is 1222210211021.

It is a cyclic number.

It is not a de Polignac number, because 1201120122221 - 2³⁴ = 1183940253037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201120122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201120122211) 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, 21870446 + ... + 21925296.

It is an arithmetic number, because the mean of its divisors is an integer number (78396946740).

Almost surely, 2^{1201120122221} is an apocalyptic number.

It is an amenable number.

1201120122221 is a deficient number, since it is larger than the sum of its proper divisors (53231025619).

1201120122221 is a wasteful number, since it uses less digits than its factorization.

1201120122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62044.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1201120122221 its reverse (1222210211021), we get a palindrome (2423330333242).

The spelling of 1201120122221 in words is "one trillion, two hundred one billion, one hundred twenty million, one hundred twenty-two thousand, two hundred twenty-one".