2220121212001 has 8 divisors (see below), whose sum is σ = 2767943329344. Its totient is φ = 1729964580720.

The previous prime is 2220121211999. The next prime is 2220121212007. The reversal of 2220121212001 is 1002121210222.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2220121212001 - 2¹ = 2220121211999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220121212007) 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, 14416371430 + ... + 14416371583.

It is an arithmetic number, because the mean of its divisors is an integer number (345992916168).

Almost surely, 2^{2220121212001} is an apocalyptic number.

It is an amenable number.

2220121212001 is a deficient number, since it is larger than the sum of its proper divisors (547822117343).

2220121212001 is a wasteful number, since it uses less digits than its factorization.

2220121212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28832743031.

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

Adding to 2220121212001 its reverse (1002121210222), we get a palindrome (3222242422223).

The spelling of 2220121212001 in words is "two trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twelve thousand, one".