22011214251 has 16 divisors (see below), whose sum is σ = 31619651840. Its totient is φ = 13539445920.

The previous prime is 22011214213. The next prime is 22011214307. The reversal of 22011214251 is 15241211022.

It is not a de Polignac number, because 22011214251 - 2⁶ = 22011214187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22011214051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31981 + ... + 212238.

It is an arithmetic number, because the mean of its divisors is an integer number (1976228240).

Almost surely, 2^22011214251 is an apocalyptic number.

22011214251 is a deficient number, since it is larger than the sum of its proper divisors (9608437589).

22011214251 is a wasteful number, since it uses less digits than its factorization.

22011214251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246546.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 22011214251 its reverse (15241211022), we get a palindrome (37252425273).

The spelling of 22011214251 in words is "twenty-two billion, eleven million, two hundred fourteen thousand, two hundred fifty-one".