10221223140 has 120 divisors (see below), whose sum is σ = 33950585592. Its totient is φ = 2565319680.

The previous prime is 10221223121. The next prime is 10221223141. The reversal of 10221223140 is 4132212201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 129413376 + 10091809764 = 11376^2 + 100458^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (10221223141) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 158031 + ... + 213110.

Almost surely, 2^10221223140 is an apocalyptic number.

10221223140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221223140 is an abundant number, since it is smaller than the sum of its proper divisors (23729362452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10221223140 is a wasteful number, since it uses less digits than its factorization.

10221223140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371179 (or 371168 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 10221223140 its reverse (4132212201), we get a palindrome (14353435341).

The spelling of 10221223140 in words is "ten billion, two hundred twenty-one million, two hundred twenty-three thousand, one hundred forty".