1011022020015 has 32 divisors (see below), whose sum is σ = 1848856442880. Its totient is φ = 462148879104.

The previous prime is 1011022020011. The next prime is 1011022020079. The reversal of 1011022020015 is 5100202201101.

It is not a de Polignac number, because 1011022020015 - 2² = 1011022020011 is a prime.

It is a super-2 number, since 2×1011022020015² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 1011022019976 and 1011022020003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011022020011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1187787 + ... + 1852803.

It is an arithmetic number, because the mean of its divisors is an integer number (57776763840).

Almost surely, 2^{1011022020015} is an apocalyptic number.

1011022020015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1011022020015 is a deficient number, since it is larger than the sum of its proper divisors (837834422865).

1011022020015 is a wasteful number, since it uses less digits than its factorization.

1011022020015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679511.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 1011022020015 its reverse (5100202201101), we get a palindrome (6111224221116).

The spelling of 1011022020015 in words is "one trillion, eleven billion, twenty-two million, twenty thousand, fifteen".