126021523371 has 16 divisors (see below), whose sum is σ = 168192610080. Its totient is φ = 83932439040.

The previous prime is 126021523351. The next prime is 126021523399. The reversal of 126021523371 is 173325120621.

It is not a de Polignac number, because 126021523371 - 2²⁶ = 125954414507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126021523321) 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, 22823091 + ... + 22828611.

It is an arithmetic number, because the mean of its divisors is an integer number (10512038130).

Almost surely, 2^126021523371 is an apocalyptic number.

126021523371 is a deficient number, since it is larger than the sum of its proper divisors (42171086709).

126021523371 is a wasteful number, since it uses less digits than its factorization.

126021523371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11566.

The product of its (nonzero) digits is 15120, while the sum is 33.

Adding to 126021523371 its reverse (173325120621), we get a palindrome (299346643992).

The spelling of 126021523371 in words is "one hundred twenty-six billion, twenty-one million, five hundred twenty-three thousand, three hundred seventy-one".