10212001221222 has 24 divisors (see below), whose sum is σ = 22724002718976. Its totient is φ = 3312000395856.

The previous prime is 10212001221221. The next prime is 10212001221229. The reversal of 10212001221222 is 22212210021201.

It is a happy number.

10212001221222 is a `hidden beast` number, since 1 + 0 + 21 + 200 + 1 + 221 + 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 = 10212001221195 and 10212001221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212001221221) 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, 7666666918 + ... + 7666668249.

It is an arithmetic number, because the mean of its divisors is an integer number (946833446624).

Almost surely, 2^{10212001221222} is an apocalyptic number.

10212001221222 is an abundant number, since it is smaller than the sum of its proper divisors (12512001497754).

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

10212001221222 is a wasteful number, since it uses less digits than its factorization.

10212001221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15333335212 (or 15333335209 counting only the distinct ones).

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

Adding to 10212001221222 its reverse (22212210021201), we get a palindrome (32424211242423).

It can be divided in two parts, 1021200 and 1221222, that added together give a palindrome (2242422).

The spelling of 10212001221222 in words is "ten trillion, two hundred twelve billion, one million, two hundred twenty-one thousand, two hundred twenty-two".