151002021 has 4 divisors (see below), whose sum is σ = 201336032. Its totient is φ = 100668012.

The previous prime is 151002001. The next prime is 151002029. The reversal of 151002021 is 120200151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 151002021 - 2¹⁷ = 150870949 is a prime.

It is a super-2 number, since 2×151002021² = 45603220692168882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 151001988 and 151002006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151002029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25167001 + ... + 25167006.

It is an arithmetic number, because the mean of its divisors is an integer number (50334008).

Almost surely, 2^151002021 is an apocalyptic number.

It is an amenable number.

151002021 is a deficient number, since it is larger than the sum of its proper divisors (50334011).

151002021 is an equidigital number, since it uses as much as digits as its factorization.

151002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50334010.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 151002021 is about 12288.2879604931. The cubic root of 151002021 is about 532.5097778627.

Adding to 151002021 its reverse (120200151), we get a palindrome (271202172).

The spelling of 151002021 in words is "one hundred fifty-one million, two thousand, twenty-one".