21001201010 has 16 divisors (see below), whose sum is σ = 37843673472. Its totient is φ = 8391255600.

The previous prime is 21001200991. The next prime is 21001201127. The reversal of 21001201010 is 1010210012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1143536 + ... + 1161755.

It is an arithmetic number, because the mean of its divisors is an integer number (2365229592).

Almost surely, 2^21001201010 is an apocalyptic number.

21001201010 is a deficient number, since it is larger than the sum of its proper divisors (16842472462).

21001201010 is a wasteful number, since it uses less digits than its factorization.

21001201010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306209.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 21001201010 its reverse (1010210012), we get a palindrome (22011411022).

The spelling of 21001201010 in words is "twenty-one billion, one million, two hundred one thousand, ten".