2011221312001 has 4 divisors (see below), whose sum is σ = 2194059613104. Its totient is φ = 1828383010900.

The previous prime is 2011221311999. The next prime is 2011221312029. The reversal of 2011221312001 is 1002131221102.

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 2011221312001 - 2¹ = 2011221311999 is a prime.

It is a super-2 number, since 2×2011221312001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011221312091) 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, 91419150535 + ... + 91419150556.

It is an arithmetic number, because the mean of its divisors is an integer number (548514903276).

Almost surely, 2^{2011221312001} is an apocalyptic number.

It is an amenable number.

2011221312001 is a deficient number, since it is larger than the sum of its proper divisors (182838301103).

2011221312001 is a wasteful number, since it uses less digits than its factorization.

2011221312001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182838301102.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 2011221312001 its reverse (1002131221102), we get a palindrome (3013352533103).

The spelling of 2011221312001 in words is "two trillion, eleven billion, two hundred twenty-one million, three hundred twelve thousand, one".