1221022102201 has 8 divisors (see below), whose sum is σ = 1389938203584. Its totient is φ = 1061758349520.

The previous prime is 1221022102171. The next prime is 1221022102229. The reversal of 1221022102201 is 1022012201221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1221022102201 - 2⁷ = 1221022102073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221022102241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2413086906 + ... + 2413087411.

It is an arithmetic number, because the mean of its divisors is an integer number (173742275448).

Almost surely, 2^{1221022102201} is an apocalyptic number.

1221022102201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1221022102201 is a deficient number, since it is larger than the sum of its proper divisors (168916101383).

1221022102201 is a wasteful number, since it uses less digits than its factorization.

1221022102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4826174351.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1221022102201 its reverse (1022012201221), we get a palindrome (2243034303422).

The spelling of 1221022102201 in words is "one trillion, two hundred twenty-one billion, twenty-two million, one hundred two thousand, two hundred one".