2102033021 has 4 divisors (see below), whose sum is σ = 2293126944. Its totient is φ = 1910939100.

The previous prime is 2102032969. The next prime is 2102033081. The reversal of 2102033021 is 1203302012.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102033021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102032987 and 2102033005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102033081) 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, 95546945 + ... + 95546966.

It is an arithmetic number, because the mean of its divisors is an integer number (573281736).

Almost surely, 2^2102033021 is an apocalyptic number.

It is an amenable number.

2102033021 is a deficient number, since it is larger than the sum of its proper divisors (191093923).

2102033021 is a wasteful number, since it uses less digits than its factorization.

2102033021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191093922.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2102033021 is about 45847.9336611804. The cubic root of 2102033021 is about 1280.9922768367.

Adding to 2102033021 its reverse (1203302012), we get a palindrome (3305335033).

The spelling of 2102033021 in words is "two billion, one hundred two million, thirty-three thousand, twenty-one".