1012220121222 has 48 divisors (see below), whose sum is σ = 2209541488128. Its totient is φ = 334889478000.

The previous prime is 1012220121191. The next prime is 1012220121259. The reversal of 1012220121222 is 2221210222101.

It is a happy number.

1012220121222 is a `hidden beast` number, since 101 + 2 + 220 + 121 + 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 = 1012220121195 and 1012220121204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1973743 + ... + 2433125.

It is an arithmetic number, because the mean of its divisors is an integer number (46032114336).

Almost surely, 2^{1012220121222} is an apocalyptic number.

1012220121222 is an abundant number, since it is smaller than the sum of its proper divisors (1197321366906).

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

1012220121222 is a wasteful number, since it uses less digits than its factorization.

1012220121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460305 (or 460302 counting only the distinct ones).

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

Adding to 1012220121222 its reverse (2221210222101), we get a palindrome (3233430343323).

The spelling of 1012220121222 in words is "one trillion, twelve billion, two hundred twenty million, one hundred twenty-one thousand, two hundred twenty-two".