1220212001211 has 12 divisors (see below), whose sum is σ = 1892573716392. Its totient is φ = 697264000608.

The previous prime is 1220212001209. The next prime is 1220212001227. The reversal of 1220212001211 is 1121002120221.

It is not a de Polignac number, because 1220212001211 - 2¹ = 1220212001209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220212001251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4150380810 + ... + 4150381103.

It is an arithmetic number, because the mean of its divisors is an integer number (157714476366).

Almost surely, 2^{1220212001211} is an apocalyptic number.

1220212001211 is a deficient number, since it is larger than the sum of its proper divisors (672361715181).

1220212001211 is an equidigital number, since it uses as much as digits as its factorization.

1220212001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8300761930 (or 8300761923 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1220212001211 its reverse (1121002120221), we get a palindrome (2341214121432).

The spelling of 1220212001211 in words is "one trillion, two hundred twenty billion, two hundred twelve million, one thousand, two hundred eleven".