22211212011121 has 8 divisors (see below), whose sum is σ = 25384271693760. Its totient is φ = 19038159677328.

The previous prime is 22211212011113. The next prime is 22211212011181. The reversal of 22211212011121 is 12111021211222.

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 22211212011121 - 2³ = 22211212011113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22211212011181) 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, 8568495 + ... + 10855483.

It is an arithmetic number, because the mean of its divisors is an integer number (3173033961720).

Almost surely, 2^{22211212011121} is an apocalyptic number.

It is an amenable number.

22211212011121 is a deficient number, since it is larger than the sum of its proper divisors (3173059682639).

22211212011121 is a wasteful number, since it uses less digits than its factorization.

22211212011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674423.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22211212011121 its reverse (12111021211222), we get a palindrome (34322233222343).

The spelling of 22211212011121 in words is "twenty-two trillion, two hundred eleven billion, two hundred twelve million, eleven thousand, one hundred twenty-one".