121222210011012 has 216 divisors, whose sum is σ = 351598676712192. Its totient is φ = 35122592482560.

The previous prime is 121222210010981. The next prime is 121222210011029. The reversal of 121222210011012 is 210110012222121.

121222210011012 is a `hidden beast` number, since 121 + 222 + 210 + 0 + 110 + 1 + 2 = 666.

It is a super-2 number, since 2×121222210011012² (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 an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 247520293 + ... + 248009555.

Almost surely, 2^{121222210011012} is an apocalyptic number.

121222210011012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121222210011012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175799338356096).

121222210011012 is an abundant number, since it is smaller than the sum of its proper divisors (230376466701180).

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

121222210011012 is a wasteful number, since it uses less digits than its factorization.

121222210011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491791 (or 491775 counting only the distinct ones).

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

Adding to 121222210011012 its reverse (210110012222121), we get a palindrome (331332222233133).

The spelling of 121222210011012 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, two hundred ten million, eleven thousand, twelve".