22011121222100 has 36 divisors (see below), whose sum is σ = 47775396441948. Its totient is φ = 8802372288000.

The previous prime is 22011121222067. The next prime is 22011121222133. The reversal of 22011121222100 is 122212111022.

It is an interprime number because it is at equal distance from previous prime (22011121222067) and next prime (22011121222133).

It can be written as a sum of positive squares in 6 ways, for example, as 95671438864 + 21915449783236 = 309308^2 + 4681394^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25526291 + ... + 26374490.

Almost surely, 2^{22011121222100} is an apocalyptic number.

22011121222100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011121222100 is an abundant number, since it is smaller than the sum of its proper divisors (25764275219848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22011121222100 is a wasteful number, since it uses less digits than its factorization.

22011121222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51905036 (or 51905029 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22011121222100 its reverse (122212111022), we get a palindrome (22133333333122).

The spelling of 22011121222100 in words is "twenty-two trillion, eleven billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred".