1021552011 has 12 divisors (see below), whose sum is σ = 1476579000. Its totient is φ = 680571360.

The previous prime is 1021552001. The next prime is 1021552013. The reversal of 1021552011 is 1102551201.

1021552011 is a `hidden beast` number, since 102 + 1 + 552 + 0 + 11 = 666.

It is not a de Polignac number, because 1021552011 - 2¹⁵ = 1021519243 is a prime.

It is a super-2 number, since 2×1021552011² = 2087137022356288242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021552013) 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 11 ways as a sum of consecutive naturals, for example, 24370 + ... + 51351.

It is an arithmetic number, because the mean of its divisors is an integer number (123048250).

Almost surely, 2^1021552011 is an apocalyptic number.

1021552011 is a deficient number, since it is larger than the sum of its proper divisors (455026989).

1021552011 is a wasteful number, since it uses less digits than its factorization.

1021552011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77226 (or 77223 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 1021552011 is about 31961.7272843631. The cubic root of 1021552011 is about 1007.1330029603.

It can be divided in two parts, 10215 and 52011, that added together give a palindrome (62226).

The spelling of 1021552011 in words is "one billion, twenty-one million, five hundred fifty-two thousand, eleven".