1122121201012 has 48 divisors (see below), whose sum is σ = 2297681971200. Its totient is φ = 469469905632.

The previous prime is 1122121200997. The next prime is 1122121201063. The reversal of 1122121201012 is 2101021212211.

It is a super-2 number, since 2×1122121201012² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1971489 + ... + 2476087.

It is an arithmetic number, because the mean of its divisors is an integer number (47868374400).

Almost surely, 2^{1122121201012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122121201012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1148840985600).

1122121201012 is an abundant number, since it is smaller than the sum of its proper divisors (1175560770188).

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

1122121201012 is a wasteful number, since it uses less digits than its factorization.

1122121201012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506500 (or 506498 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1122121201012 its reverse (2101021212211), we get a palindrome (3223142413223).

The spelling of 1122121201012 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred one thousand, twelve".