2121021211122 has 48 divisors (see below), whose sum is σ = 5016907022400. Its totient is φ = 642274192800.

The previous prime is 2121021211103. The next prime is 2121021211159. The reversal of 2121021211122 is 2211121201212.

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 = 2121021211095 and 2121021211104.

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, 3551529 + ... + 4105532.

It is an arithmetic number, because the mean of its divisors is an integer number (104518896300).

Almost surely, 2^{2121021211122} is an apocalyptic number.

2121021211122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2121021211122 is an abundant number, since it is smaller than the sum of its proper divisors (2895885811278).

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

2121021211122 is a wasteful number, since it uses less digits than its factorization.

2121021211122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7658479 (or 7658476 counting only the distinct ones).

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

Adding to 2121021211122 its reverse (2211121201212), we get a palindrome (4332142412334).

The spelling of 2121021211122 in words is "two trillion, one hundred twenty-one billion, twenty-one million, two hundred eleven thousand, one hundred twenty-two".