22121000001022 has 16 divisors (see below), whose sum is σ = 35734062061152. Its totient is φ = 10209652598880.

The previous prime is 22121000001011. The next prime is 22121000001029. The reversal of 22121000001022 is 22010000012122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 22121000000993 and 22121000001011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121000001029) 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, 5791072 + ... + 8819212.

It is an arithmetic number, because the mean of its divisors is an integer number (2233378878822).

Almost surely, 2^{22121000001022} is an apocalyptic number.

22121000001022 is a deficient number, since it is larger than the sum of its proper divisors (13613062060130).

22121000001022 is a wasteful number, since it uses less digits than its factorization.

22121000001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309123.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22121000001022 its reverse (22010000012122), we get a palindrome (44131000013144).

The spelling of 22121000001022 in words is "twenty-two trillion, one hundred twenty-one billion, one thousand, twenty-two".