1011122021 has 16 divisors (see below), whose sum is σ = 1298567424. Its totient is φ = 765224064.

The previous prime is 1011122017. The next prime is 1011122129. The reversal of 1011122021 is 1202211101.

It is a cyclic number.

It is not a de Polignac number, because 1011122021 - 2² = 1011122017 is a prime.

It is a super-2 number, since 2×1011122021² = 2044735482702248882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1011121993 and 1011122011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011122011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239456 + ... + 243641.

It is an arithmetic number, because the mean of its divisors is an integer number (81160464).

Almost surely, 2^1011122021 is an apocalyptic number.

It is an amenable number.

1011122021 is a deficient number, since it is larger than the sum of its proper divisors (287445403).

1011122021 is a wasteful number, since it uses less digits than its factorization.

1011122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483140.

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

The square root of 1011122021 is about 31798.1449301685. The cubic root of 1011122021 is about 1003.6936802615.

Adding to 1011122021 its reverse (1202211101), we get a palindrome (2213333122).

The spelling of 1011122021 in words is "one billion, eleven million, one hundred twenty-two thousand, twenty-one".