1211012101210 has 8 divisors (see below), whose sum is σ = 2179821782196. Its totient is φ = 484404840480.

The previous prime is 1211012101183. The next prime is 1211012101297. The reversal of 1211012101210 is 121012101121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1009781804641 + 201230296569 = 1004879^2 + 448587^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60550605051 + ... + 60550605070.

Almost surely, 2^{1211012101210} is an apocalyptic number.

1211012101210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211012101210 is a deficient number, since it is larger than the sum of its proper divisors (968809680986).

1211012101210 is a wasteful number, since it uses less digits than its factorization.

1211012101210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121101210128.

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

Adding to 1211012101210 its reverse (121012101121), we get a palindrome (1332024202331).

The spelling of 1211012101210 in words is "one trillion, two hundred eleven billion, twelve million, one hundred one thousand, two hundred ten".