1201023412221 has 32 divisors (see below), whose sum is σ = 1769398380288. Its totient is φ = 720771645440.

The previous prime is 1201023412159. The next prime is 1201023412291. The reversal of 1201023412221 is 1222143201021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1201023412221 - 2¹⁷ = 1201023281149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201023412291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27615325 + ... + 27658781.

It is an arithmetic number, because the mean of its divisors is an integer number (55293699384).

Almost surely, 2^{1201023412221} is an apocalyptic number.

It is an amenable number.

1201023412221 is a deficient number, since it is larger than the sum of its proper divisors (568374968067).

1201023412221 is a wasteful number, since it uses less digits than its factorization.

1201023412221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67061.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1201023412221 its reverse (1222143201021), we get a palindrome (2423166613242).

The spelling of 1201023412221 in words is "one trillion, two hundred one billion, twenty-three million, four hundred twelve thousand, two hundred twenty-one".