21011221301110 has 32 divisors (see below), whose sum is σ = 39812381007840. Its totient is φ = 7961817837312.

The previous prime is 21011221301107. The next prime is 21011221301113. The reversal of 21011221301110 is 1110312211012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21011221301107) and next prime (21011221301113).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011221301113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2346402 + ... + 6894058.

It is an arithmetic number, because the mean of its divisors is an integer number (1244136906495).

Almost surely, 2^{21011221301110} is an apocalyptic number.

21011221301110 is a deficient number, since it is larger than the sum of its proper divisors (18801159706730).

21011221301110 is a wasteful number, since it uses less digits than its factorization.

21011221301110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4572000.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 21011221301110 its reverse (1110312211012), we get a palindrome (22121533512122).

The spelling of 21011221301110 in words is "twenty-one trillion, eleven billion, two hundred twenty-one million, three hundred one thousand, one hundred ten".