1011120001021 has 16 divisors (see below), whose sum is σ = 1160018677440. Its totient is φ = 873565050240.

The previous prime is 1011120001013. The next prime is 1011120001027. The reversal of 1011120001021 is 1201000211101.

It is a cyclic number.

It is not a de Polignac number, because 1011120001021 - 2³ = 1011120001013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011120000989 and 1011120001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011120001027) 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, 24639760 + ... + 24680761.

It is an arithmetic number, because the mean of its divisors is an integer number (72501167340).

Almost surely, 2^{1011120001021} is an apocalyptic number.

It is an amenable number.

1011120001021 is a deficient number, since it is larger than the sum of its proper divisors (148898676419).

1011120001021 is a wasteful number, since it uses less digits than its factorization.

1011120001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49320636.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1011120001021 its reverse (1201000211101), we get a palindrome (2212120212122).

The spelling of 1011120001021 in words is "one trillion, eleven billion, one hundred twenty million, one thousand, twenty-one".