10221772426 has 8 divisors (see below), whose sum is σ = 15389658180. Its totient is φ = 5091886368.

The previous prime is 10221772411. The next prime is 10221772441. The reversal of 10221772426 is 62427712201.

It is an interprime number because it is at equal distance from previous prime (10221772411) and next prime (10221772441).

It can be written as a sum of positive squares in 2 ways, for example, as 10087189225 + 134583201 = 100435^2 + 11601^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 10221772391 and 10221772400.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9499251 + ... + 9500326.

Almost surely, 2^10221772426 is an apocalyptic number.

10221772426 is a deficient number, since it is larger than the sum of its proper divisors (5167885754).

10221772426 is a wasteful number, since it uses less digits than its factorization.

10221772426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18999848.

The product of its (nonzero) digits is 18816, while the sum is 34.

The spelling of 10221772426 in words is "ten billion, two hundred twenty-one million, seven hundred seventy-two thousand, four hundred twenty-six".