221210404012150 has 24 divisors (see below), whose sum is σ = 470230115958000. Its totient is φ = 75843567089760.

The previous prime is 221210404012121. The next prime is 221210404012151. The reversal of 221210404012150 is 51210404012122.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221210404012151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 316014862525 + ... + 316014863224.

It is an arithmetic number, because the mean of its divisors is an integer number (19592921498250).

Almost surely, 2^{221210404012150} is an apocalyptic number.

221210404012150 is an abundant number, since it is smaller than the sum of its proper divisors (249019711945850).

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

221210404012150 is a wasteful number, since it uses less digits than its factorization.

221210404012150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632029725768 (or 632029725763 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 221210404012150 its reverse (51210404012122), we get a palindrome (272420808024272).

The spelling of 221210404012150 in words is "two hundred twenty-one trillion, two hundred ten billion, four hundred four million, twelve thousand, one hundred fifty".