21250606141 has 16 divisors (see below), whose sum is σ = 21643335936. Its totient is φ = 20862000000.

The previous prime is 21250606099. The next prime is 21250606193. The reversal of 21250606141 is 14160605212.

It is a cyclic number.

It is not a de Polignac number, because 21250606141 - 2²¹ = 21248508989 is a prime.

It is a super-2 number, since 2×21250606141² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21250606241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11605096 + ... + 11606926.

It is an arithmetic number, because the mean of its divisors is an integer number (1352708496).

Almost surely, 2^21250606141 is an apocalyptic number.

It is an amenable number.

21250606141 is a deficient number, since it is larger than the sum of its proper divisors (392729795).

21250606141 is a wasteful number, since it uses less digits than its factorization.

21250606141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2844.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 21250606141 in words is "twenty-one billion, two hundred fifty million, six hundred six thousand, one hundred forty-one".