1151100021 has 8 divisors (see below), whose sum is σ = 1601530560. Its totient is φ = 734034752.

The previous prime is 1151100001. The next prime is 1151100023. The reversal of 1151100021 is 1200011511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1151100021 - 2¹¹ = 1151097973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151100023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8341236 + ... + 8341373.

It is an arithmetic number, because the mean of its divisors is an integer number (200191320).

Almost surely, 2^1151100021 is an apocalyptic number.

It is an amenable number.

1151100021 is a deficient number, since it is larger than the sum of its proper divisors (450430539).

1151100021 is a wasteful number, since it uses less digits than its factorization.

1151100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16682635.

The product of its (nonzero) digits is 10, while the sum is 12.

The square root of 1151100021 is about 33927.8649637728. The cubic root of 1151100021 is about 1048.0234990385.

Adding to 1151100021 its reverse (1200011511), we get a palindrome (2351111532).

The spelling of 1151100021 in words is "one billion, one hundred fifty-one million, one hundred thousand, twenty-one".