22121402013 has 12 divisors (see below), whose sum is σ = 32357607360. Its totient is φ = 14560922376.

The previous prime is 22121402011. The next prime is 22121402021. The reversal of 22121402013 is 31020412122.

It is a happy number.

It is not a de Polignac number, because 22121402013 - 2¹ = 22121402011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121402011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15555831 + ... + 15557252.

It is an arithmetic number, because the mean of its divisors is an integer number (2696467280).

Almost surely, 2^22121402013 is an apocalyptic number.

It is an amenable number.

22121402013 is a deficient number, since it is larger than the sum of its proper divisors (10236205347).

22121402013 is a wasteful number, since it uses less digits than its factorization.

22121402013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31113168 (or 31113165 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22121402013 its reverse (31020412122), we get a palindrome (53141814135).

It can be divided in two parts, 2212 and 1402013, that added together give a square (1404225 = 1185²).

The spelling of 22121402013 in words is "twenty-two billion, one hundred twenty-one million, four hundred two thousand, thirteen".