1001021120022 has 128 divisors (see below), whose sum is σ = 2528929382400. Its totient is φ = 256584182400.

The previous prime is 1001021120003. The next prime is 1001021120023. The reversal of 1001021120022 is 2200211201001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001021120023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 86895979 + ... + 86907497.

It is an arithmetic number, because the mean of its divisors is an integer number (19757260800).

Almost surely, 2^{1001021120022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001021120022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264464691200).

1001021120022 is an abundant number, since it is smaller than the sum of its proper divisors (1527908262378).

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

1001021120022 is a wasteful number, since it uses less digits than its factorization.

1001021120022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14002.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1001021120022 its reverse (2200211201001), we get a palindrome (3201232321023).

The spelling of 1001021120022 in words is "one trillion, one billion, twenty-one million, one hundred twenty thousand, twenty-two".