2212121100001 has 8 divisors (see below), whose sum is σ = 2262156251904. Its totient is φ = 2162209645920.

The previous prime is 2212121099989. The next prime is 2212121100109. The reversal of 2212121100001 is 1000011212122.

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 2212121100001 - 2³¹ = 2209973616353 is a prime.

It is a super-2 number, since 2×2212121100001² (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 (2212121160001) 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, 30888285 + ... + 30959818.

It is an arithmetic number, because the mean of its divisors is an integer number (282769531488).

Almost surely, 2^{2212121100001} is an apocalyptic number.

It is an amenable number.

2212121100001 is a deficient number, since it is larger than the sum of its proper divisors (50035151903).

2212121100001 is an equidigital number, since it uses as much as digits as its factorization.

2212121100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61848911.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2212121100001 its reverse (1000011212122), we get a palindrome (3212132312123).

The spelling of 2212121100001 in words is "two trillion, two hundred twelve billion, one hundred twenty-one million, one hundred thousand, one".