22145211451 has 16 divisors (see below), whose sum is σ = 24437013120. Its totient is φ = 19900660480.

The previous prime is 22145211427. The next prime is 22145211457. The reversal of 22145211451 is 15411254122.

It is a cyclic number.

It is not a de Polignac number, because 22145211451 - 2²¹ = 22143114299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22145211457) 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, 529515 + ... + 569803.

It is an arithmetic number, because the mean of its divisors is an integer number (1527313320).

Almost surely, 2^22145211451 is an apocalyptic number.

22145211451 is a deficient number, since it is larger than the sum of its proper divisors (2291801669).

22145211451 is a wasteful number, since it uses less digits than its factorization.

22145211451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40874.

The product of its digits is 3200, while the sum is 28.

Adding to 22145211451 its reverse (15411254122), we get a palindrome (37556465573).

It can be divided in two parts, 221452 and 11451, that added together give a triangular number (232903 = T₆₈₂).

The spelling of 22145211451 in words is "twenty-two billion, one hundred forty-five million, two hundred eleven thousand, four hundred fifty-one".