21001472150 has 12 divisors (see below), whose sum is σ = 39062738292. Its totient is φ = 8400588840.

The previous prime is 21001472137. The next prime is 21001472159. The reversal of 21001472150 is 5127410012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001472159) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210014672 + ... + 210014771.

It is an arithmetic number, because the mean of its divisors is an integer number (3255228191).

Almost surely, 2^21001472150 is an apocalyptic number.

21001472150 is a deficient number, since it is larger than the sum of its proper divisors (18061266142).

21001472150 is a wasteful number, since it uses less digits than its factorization.

21001472150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420029455 (or 420029450 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

Adding to 21001472150 its reverse (5127410012), we get a palindrome (26128882162).

The spelling of 21001472150 in words is "twenty-one billion, one million, four hundred seventy-two thousand, one hundred fifty".