21101020212202 has 16 divisors (see below), whose sum is σ = 36855690291072. Its totient is φ = 8872666180560.

The previous prime is 21101020212197. The next prime is 21101020212203. The reversal of 21101020212202 is 20221202010112.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21101020212203) 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, 14219015574 + ... + 14219017057.

It is an arithmetic number, because the mean of its divisors is an integer number (2303480643192).

Almost surely, 2^{21101020212202} is an apocalyptic number.

21101020212202 is a deficient number, since it is larger than the sum of its proper divisors (15754670078870).

21101020212202 is a wasteful number, since it uses less digits than its factorization.

21101020212202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28438032693.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21101020212202 its reverse (20221202010112), we get a palindrome (41322222222314).

The spelling of 21101020212202 in words is "twenty-one trillion, one hundred one billion, twenty million, two hundred twelve thousand, two hundred two".