1223202000021 has 8 divisors (see below), whose sum is σ = 1639386446400. Its totient is φ = 811242776832.

The previous prime is 1223202000017. The next prime is 1223202000029. The reversal of 1223202000021 is 1200002023221.

It is a happy number.

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

It is not a de Polignac number, because 1223202000021 - 2² = 1223202000017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223202000029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1056305121 + ... + 1056306278.

It is an arithmetic number, because the mean of its divisors is an integer number (204923305800).

Almost surely, 2^{1223202000021} is an apocalyptic number.

It is an amenable number.

1223202000021 is a deficient number, since it is larger than the sum of its proper divisors (416184446379).

1223202000021 is a wasteful number, since it uses less digits than its factorization.

1223202000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112611595.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 1223202000021 its reverse (1200002023221), we get a palindrome (2423204023242).

The spelling of 1223202000021 in words is "one trillion, two hundred twenty-three billion, two hundred two million, twenty-one", and thus it is an aban number.