211012210101021 has 32 divisors (see below), whose sum is σ = 330585188317440. Its totient is φ = 117194321926656.

The previous prime is 211012210100981. The next prime is 211012210101047. The reversal of 211012210101021 is 120101012210112.

It is a happy number.

It is not a de Polignac number, because 211012210101021 - 2⁹ = 211012210100509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012210181021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144188166 + ... + 145644263.

It is an arithmetic number, because the mean of its divisors is an integer number (10330787134920).

Almost surely, 2^{211012210101021} is an apocalyptic number.

211012210101021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

211012210101021 is a deficient number, since it is larger than the sum of its proper divisors (119572978216419).

211012210101021 is a wasteful number, since it uses less digits than its factorization.

211012210101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289833413.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211012210101021 its reverse (120101012210112), we get a palindrome (331113222311133).

The spelling of 211012210101021 in words is "two hundred eleven trillion, twelve billion, two hundred ten million, one hundred one thousand, twenty-one".