2001220021102 has 8 divisors (see below), whose sum is σ = 3001871431656. Its totient is φ = 1000596210552.

The previous prime is 2001220020949. The next prime is 2001220021103. The reversal of 2001220021102 is 2011200221002.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001220021103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6717768 + ... + 7009339.

It is an arithmetic number, because the mean of its divisors is an integer number (375233928957).

Almost surely, 2^{2001220021102} is an apocalyptic number.

2001220021102 is a deficient number, since it is larger than the sum of its proper divisors (1000651410554).

2001220021102 is a wasteful number, since it uses less digits than its factorization.

2001220021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13800002.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2001220021102 its reverse (2011200221002), we get a palindrome (4012420242104).

The spelling of 2001220021102 in words is "two trillion, one billion, two hundred twenty million, twenty-one thousand, one hundred two".