2220120021001 has 32 divisors (see below), whose sum is σ = 2464258940928. Its totient is φ = 1990924427520.

The previous prime is 2220120020957. The next prime is 2220120021013. The reversal of 2220120021001 is 1001200210222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2220120021001 - 2¹³ = 2220120012809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220120021101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9070636 + ... + 9312178.

It is an arithmetic number, because the mean of its divisors is an integer number (77008091904).

Almost surely, 2^{2220120021001} is an apocalyptic number.

It is an amenable number.

2220120021001 is a deficient number, since it is larger than the sum of its proper divisors (244138919927).

2220120021001 is a wasteful number, since it uses less digits than its factorization.

2220120021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241861.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2220120021001 its reverse (1001200210222), we get a palindrome (3221320231223).

The spelling of 2220120021001 in words is "two trillion, two hundred twenty billion, one hundred twenty million, twenty-one thousand, one".