1211010010000 has 150 divisors (see below), whose sum is σ = 3410667729150. Its totient is φ = 415203264000.

The previous prime is 1211010009983. The next prime is 1211010010037. The reversal of 1211010010000 is 100101121.

It can be written as a sum of positive squares in 5 ways, for example, as 675999684864 + 535010325136 = 822192^2 + 731444^2 .

It is a Harshad number since it is a multiple of its sum of digits (7).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 745725 + ... + 1725724.

It is an arithmetic number, because the mean of its divisors is an integer number (22737784861).

Almost surely, 2^{1211010010000} is an apocalyptic number.

1211010010000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211010010000 is an abundant number, since it is smaller than the sum of its proper divisors (2199657719150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211010010000 is an equidigital number, since it uses as much as digits as its factorization.

1211010010000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2471491 (or 2471463 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 1211010010000 its reverse (100101121), we get a palindrome (1211110111121).

The spelling of 1211010010000 in words is "one trillion, two hundred eleven billion, ten million, ten thousand".