1222000022021 has 8 divisors (see below), whose sum is σ = 1224840872640. Its totient is φ = 1219159432512.

The previous prime is 1222000022003. The next prime is 1222000022053. The reversal of 1222000022021 is 1202200002221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222000022021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1222000021987 and 1222000022005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222000022821) 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, 11798366 + ... + 11901488.

It is an arithmetic number, because the mean of its divisors is an integer number (153105109080).

Almost surely, 2^{1222000022021} is an apocalyptic number.

It is an amenable number.

1222000022021 is a deficient number, since it is larger than the sum of its proper divisors (2840850619).

1222000022021 is a wasteful number, since it uses less digits than its factorization.

1222000022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130555.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1222000022021 its reverse (1202200002221), we get a palindrome (2424200024242).

The spelling of 1222000022021 in words is "one trillion, two hundred twenty-two billion, twenty-two thousand, twenty-one".