1000021021151 has 2 divisors, whose sum is σ = 1000021021152. Its totient is φ = 1000021021150.

The previous prime is 1000021021117. The next prime is 1000021021177. The reversal of 1000021021151 is 1511201200001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1000021021151 - 2¹⁸ = 1000020759007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000021021451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500010510575 + 500010510576.

It is an arithmetic number, because the mean of its divisors is an integer number (500010510576).

Almost surely, 2^{1000021021151} is an apocalyptic number.

1000021021151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000021021151 is an equidigital number, since it uses as much as digits as its factorization.

1000021021151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 14.

Adding to 1000021021151 its reverse (1511201200001), we get a palindrome (2511222221152).

The spelling of 1000021021151 in words is "one trillion, twenty-one million, twenty-one thousand, one hundred fifty-one".