21212001202 has 16 divisors (see below), whose sum is σ = 36366952320. Its totient is φ = 9089977248.

The previous prime is 21212001199. The next prime is 21212001227. The reversal of 21212001202 is 20210021212.

It is a happy number.

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, 88699 + ... + 224257.

It is an arithmetic number, because the mean of its divisors is an integer number (2272934520).

Almost surely, 2^21212001202 is an apocalyptic number.

21212001202 is a deficient number, since it is larger than the sum of its proper divisors (15154951118).

21212001202 is a wasteful number, since it uses less digits than its factorization.

21212001202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146745.

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

Adding to 21212001202 its reverse (20210021212), we get a palindrome (41422022414).

The spelling of 21212001202 in words is "twenty-one billion, two hundred twelve million, one thousand, two hundred two".