22121210210022 has 48 divisors (see below), whose sum is σ = 59755996415232. Its totient is φ = 5745768885360.

The previous prime is 22121210209991. The next prime is 22121210210027. The reversal of 22121210210022 is 22001201212122.

It is a happy number.

22121210210022 is a `hidden beast` number, since 221 + 2 + 1 + 210 + 210 + 0 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22121210209977 and 22121210210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121210210027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7980233178 + ... + 7980235949.

It is an arithmetic number, because the mean of its divisors is an integer number (1244916591984).

Almost surely, 2^{22121210210022} is an apocalyptic number.

22121210210022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22121210210022 is an abundant number, since it is smaller than the sum of its proper divisors (37634786205210).

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

22121210210022 is a wasteful number, since it uses less digits than its factorization.

22121210210022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15960469153 (or 15960469150 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22121210210022 its reverse (22001201212122), we get a palindrome (44122411422144).

The spelling of 22121210210022 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred ten million, two hundred ten thousand, twenty-two".