2621020102 has 4 divisors (see below), whose sum is σ = 3931530156. Its totient is φ = 1310510050.

The previous prime is 2621020093. The next prime is 2621020109. The reversal of 2621020102 is 2010201262.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2621020109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655255024 + ... + 655255027.

It is an arithmetic number, because the mean of its divisors is an integer number (982882539).

Almost surely, 2^2621020102 is an apocalyptic number.

2621020102 is a deficient number, since it is larger than the sum of its proper divisors (1310510054).

2621020102 is a wasteful number, since it uses less digits than its factorization.

2621020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310510053.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2621020102 is about 51195.8992693751. The cubic root of 2621020102 is about 1378.7645776683.

Adding to 2621020102 its reverse (2010201262), we get a palindrome (4631221364).

The spelling of 2621020102 in words is "two billion, six hundred twenty-one million, twenty thousand, one hundred two".