222121000011100 has 18 divisors (see below), whose sum is σ = 482002570024304. Its totient is φ = 88848400004400.

The previous prime is 222121000011061. The next prime is 222121000011143. The reversal of 222121000011100 is 1110000121222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1110604999956 + ... + 1110605000155.

Almost surely, 2^{222121000011100} is an apocalyptic number.

222121000011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222121000011100 is an abundant number, since it is smaller than the sum of its proper divisors (259881570013204).

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

222121000011100 is a wasteful number, since it uses less digits than its factorization.

222121000011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221210000125 (or 2221210000118 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 222121000011100 its reverse (1110000121222), we get a palindrome (223231000132322).

The spelling of 222121000011100 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, eleven thousand, one hundred".