121020001212222 has 192 divisors, whose sum is σ = 306061328821248. Its totient is φ = 33845382144000.

The previous prime is 121020001212179. The next prime is 121020001212379. The reversal of 121020001212222 is 222212100020121.

It is a happy number.

121020001212222 is a `hidden beast` number, since 1 + 210 + 20 + 0 + 0 + 1 + 212 + 222 = 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 = 121020001212195 and 121020001212204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1488868222 + ... + 1488949502.

It is an arithmetic number, because the mean of its divisors is an integer number (1594069420944).

Almost surely, 2^{121020001212222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121020001212222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153030664410624).

121020001212222 is an abundant number, since it is smaller than the sum of its proper divisors (185041327609026).

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

121020001212222 is a wasteful number, since it uses less digits than its factorization.

121020001212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82295 (or 82292 counting only the distinct ones).

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

Adding to 121020001212222 its reverse (222212100020121), we get a palindrome (343232101232343).

The spelling of 121020001212222 in words is "one hundred twenty-one trillion, twenty billion, one million, two hundred twelve thousand, two hundred twenty-two".