1211002111210 has 16 divisors (see below), whose sum is σ = 2254969449000. Its totient is φ = 467697366976.

The previous prime is 1211002111201. The next prime is 1211002111279. The reversal of 1211002111210 is 121112001121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1029293440681 + 181708670529 = 1014541^2 + 426273^2 .

It is a super-2 number, since 2×1211002111210² (a number of 25 digits) contains 22 as substring.

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, 2087934385 + ... + 2087934964.

Almost surely, 2^{1211002111210} is an apocalyptic number.

1211002111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211002111210 is a deficient number, since it is larger than the sum of its proper divisors (1043967337790).

1211002111210 is a wasteful number, since it uses less digits than its factorization.

1211002111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175869385.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1211002111210 its reverse (121112001121), we get a palindrome (1332114112331).

The spelling of 1211002111210 in words is "one trillion, two hundred eleven billion, two million, one hundred eleven thousand, two hundred ten".