211012121021210 has 16 divisors (see below), whose sum is σ = 402164277711336. Its totient is φ = 79439857325568.

The previous prime is 211012121021173. The next prime is 211012121021231. The reversal of 211012121021210 is 12120121210112.

211012121021210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 208587626008969 + 2424495012241 = 14442563^2 + 1557079^2 .

It is a super-2 number, since 2×211012121021210² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 620623885187 + ... + 620623885526.

Almost surely, 2^{211012121021210} is an apocalyptic number.

211012121021210 is a deficient number, since it is larger than the sum of its proper divisors (191152156690126).

211012121021210 is a wasteful number, since it uses less digits than its factorization.

211012121021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241247770737.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211012121021210 its reverse (12120121210112), we get a palindrome (223132242231322).

The spelling of 211012121021210 in words is "two hundred eleven trillion, twelve billion, one hundred twenty-one million, twenty-one thousand, two hundred ten".