10001212220000 has 60 divisors (see below), whose sum is σ = 24604482292236. Its totient is φ = 4000484880000.

The previous prime is 10001212219991. The next prime is 10001212220017. The reversal of 10001212220000 is 2221210001.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 250010306 + ... + 250050305.

Almost surely, 2^{10001212220000} is an apocalyptic number.

10001212220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001212220000 is an abundant number, since it is smaller than the sum of its proper divisors (14603270072236).

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

10001212220000 is an frugal number, since it uses more digits than its factorization.

10001212220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500060641 (or 500060618 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10001212220000 its reverse (2221210001), we get a palindrome (10003433430001).

The spelling of 10001212220000 in words is "ten trillion, one billion, two hundred twelve million, two hundred twenty thousand".