1001122101020 has 48 divisors (see below), whose sum is σ = 2153999076768. Its totient is φ = 390615459840.

The previous prime is 1001122101019. The next prime is 1001122101059. The reversal of 1001122101020 is 201012211001.

It is a super-2 number, since 2×1001122101020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1001122100992 and 1001122101010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4874324 + ... + 5075556.

It is an arithmetic number, because the mean of its divisors is an integer number (44874980766).

Almost surely, 2^{1001122101020} is an apocalyptic number.

1001122101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001122101020 is an abundant number, since it is smaller than the sum of its proper divisors (1152876975748).

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

1001122101020 is a wasteful number, since it uses less digits than its factorization.

1001122101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207350 (or 207348 counting only the distinct ones).

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

Adding to 1001122101020 its reverse (201012211001), we get a palindrome (1202134312021).

The spelling of 1001122101020 in words is "one trillion, one billion, one hundred twenty-two million, one hundred one thousand, twenty".