1211010002010 has 24 divisors (see below), whose sum is σ = 3148626005460. Its totient is φ = 322936000512.

The previous prime is 1211010001991. The next prime is 1211010002011. The reversal of 1211010002010 is 102000101121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1102859129241 + 108150872769 = 1050171^2 + 328863^2 .

It is a super-3 number, since 3×1211010002010³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1211010001983 and 1211010002001.

It is not an unprimeable number, because it can be changed into a prime (1211010002011) 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, 6727833255 + ... + 6727833434.

Almost surely, 2^{1211010002010} is an apocalyptic number.

1211010002010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211010002010 is an abundant number, since it is smaller than the sum of its proper divisors (1937616003450).

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

1211010002010 is a wasteful number, since it uses less digits than its factorization.

1211010002010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13455666702 (or 13455666699 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1211010002010 its reverse (102000101121), we get a palindrome (1313010103131).

The spelling of 1211010002010 in words is "one trillion, two hundred eleven billion, ten million, two thousand, ten".