1000221121146 has 32 divisors (see below), whose sum is σ = 2281047265728. Its totient is φ = 289656794880.

The previous prime is 1000221121139. The next prime is 1000221121147. The reversal of 1000221121146 is 6411211220001.

It is a super-2 number, since 2×1000221121146² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1000221121147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377155960 + ... + 377158611.

It is an arithmetic number, because the mean of its divisors is an integer number (71282727054).

Almost surely, 2^{1000221121146} is an apocalyptic number.

1000221121146 is an abundant number, since it is smaller than the sum of its proper divisors (1280826144582).

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

1000221121146 is a wasteful number, since it uses less digits than its factorization.

1000221121146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754314606.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 1000221121146 its reverse (6411211220001), we get a palindrome (7411432341147).

The spelling of 1000221121146 in words is "one trillion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred forty-six".