22121203001 has 4 divisors (see below), whose sum is σ = 22121862912. Its totient is φ = 22120543092.

The previous prime is 22121202997. The next prime is 22121203009. The reversal of 22121203001 is 10030212122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22121203001 - 2² = 22121202997 is a prime.

It is a super-2 number, since 2×22121203001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121203009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276821 + ... + 347666.

It is an arithmetic number, because the mean of its divisors is an integer number (5530465728).

Almost surely, 2^22121203001 is an apocalyptic number.

It is an amenable number.

22121203001 is a deficient number, since it is larger than the sum of its proper divisors (659911).

22121203001 is an equidigital number, since it uses as much as digits as its factorization.

22121203001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659910.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 22121203001 its reverse (10030212122), we get a palindrome (32151415123).

The spelling of 22121203001 in words is "twenty-two billion, one hundred twenty-one million, two hundred three thousand, one".