21203002101 has 8 divisors (see below), whose sum is σ = 29758599520. Its totient is φ = 13391369712.

The previous prime is 21203002091. The next prime is 21203002109. The reversal of 21203002101 is 10120030212.

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

It is not a de Polignac number, because 21203002101 - 2¹⁴ = 21202985717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21203002109) 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, 185991190 + ... + 185991303.

It is an arithmetic number, because the mean of its divisors is an integer number (3719824940).

Almost surely, 2^21203002101 is an apocalyptic number.

It is an amenable number.

21203002101 is a deficient number, since it is larger than the sum of its proper divisors (8555597419).

21203002101 is a wasteful number, since it uses less digits than its factorization.

21203002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371982515.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21203002101 its reverse (10120030212), we get a palindrome (31323032313).

The spelling of 21203002101 in words is "twenty-one billion, two hundred three million, two thousand, one hundred one".