100121011122222 has 24 divisors (see below), whose sum is σ = 216929050818480. Its totient is φ = 33373640622240.

The previous prime is 100121011122191. The next prime is 100121011122227. The reversal of 100121011122222 is 222221110121001.

100121011122222 is a `hidden beast` number, since 100 + 1 + 210 + 11 + 122 + 222 = 666.

It is a super-2 number, since 2×100121011122222² (a number of 29 digits) contains 22 as substring.

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 = 100121011122195 and 100121011122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121011122227) 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, 29241354 + ... + 32485362.

It is an arithmetic number, because the mean of its divisors is an integer number (9038710450770).

Almost surely, 2^{100121011122222} is an apocalyptic number.

100121011122222 is an abundant number, since it is smaller than the sum of its proper divisors (116808039696258).

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

100121011122222 is a wasteful number, since it uses less digits than its factorization.

100121011122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4958648 (or 4958645 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 100121011122222 its reverse (222221110121001), we get a palindrome (322342121243223).

The spelling of 100121011122222 in words is "one hundred trillion, one hundred twenty-one billion, eleven million, one hundred twenty-two thousand, two hundred twenty-two".