1221002022003 has 8 divisors (see below), whose sum is σ = 1628019113616. Its totient is φ = 813993139200.

The previous prime is 1221002021977. The next prime is 1221002022049. The reversal of 1221002022003 is 3002202001221.

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 1221002022003 - 2¹³ = 1221002013811 is a prime.

It is a super-2 number, since 2×1221002022003² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1221002022703) 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, 1696318 + ... + 2306403.

It is an arithmetic number, because the mean of its divisors is an integer number (203502389202).

Almost surely, 2^{1221002022003} is an apocalyptic number.

1221002022003 is a deficient number, since it is larger than the sum of its proper divisors (407017091613).

1221002022003 is a wasteful number, since it uses less digits than its factorization.

1221002022003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104405.

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

Adding to 1221002022003 its reverse (3002202001221), we get a palindrome (4223204023224).

The spelling of 1221002022003 in words is "one trillion, two hundred twenty-one billion, two million, twenty-two thousand, three".