1000122222021 has 8 divisors (see below), whose sum is σ = 1436072934240. Its totient is φ = 615459828912.

The previous prime is 1000122221953. The next prime is 1000122222059. The reversal of 1000122222021 is 1202222210001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1000122222021 - 2⁹ = 1000122221509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000122222221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12822079731 + ... + 12822079808.

It is an arithmetic number, because the mean of its divisors is an integer number (179509116780).

Almost surely, 2^{1000122222021} is an apocalyptic number.

It is an amenable number.

1000122222021 is a deficient number, since it is larger than the sum of its proper divisors (435950712219).

1000122222021 is a wasteful number, since it uses less digits than its factorization.

1000122222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25644159555.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1000122222021 its reverse (1202222210001), we get a palindrome (2202344432022).

The spelling of 1000122222021 in words is "one trillion, one hundred twenty-two million, two hundred twenty-two thousand, twenty-one".