1001022111020 has 24 divisors (see below), whose sum is σ = 2102165356704. Its totient is φ = 400405239936.

The previous prime is 1001022110993. The next prime is 1001022111029. The reversal of 1001022111020 is 201112201001.

It is a junction number, because it is equal to n+sod(n) for n = 1001022110992 and 1001022111010.

It is not an unprimeable number, because it can be changed into a prime (1001022111029) 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, 3850592 + ... + 4102328.

It is an arithmetic number, because the mean of its divisors is an integer number (87590223196).

Almost surely, 2^{1001022111020} is an apocalyptic number.

1001022111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001022111020 is an abundant number, since it is smaller than the sum of its proper divisors (1101143245684).

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

1001022111020 is a wasteful number, since it uses less digits than its factorization.

1001022111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450569 (or 450567 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1001022111020 its reverse (201112201001), we get a palindrome (1202134312021).

It can be divided in two parts, 100102 and 2111020, that added together give a palindrome (2211122).

The spelling of 1001022111020 in words is "one trillion, one billion, twenty-two million, one hundred eleven thousand, twenty".