1211020201010 has 16 divisors (see below), whose sum is σ = 2180108407896. Its totient is φ = 484347625728.

The previous prime is 1211020200989. The next prime is 1211020201019. The reversal of 1211020201010 is 101020201121.

It can be written as a sum of positive squares in 4 ways, for example, as 1153370750401 + 57649450609 = 1073951^2 + 240103^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1211020200982 and 1211020201000.

It is not an unprimeable number, because it can be changed into a prime (1211020201019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7472657 + ... + 7632996.

Almost surely, 2^{1211020201010} is an apocalyptic number.

1211020201010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211020201010 is a deficient number, since it is larger than the sum of its proper divisors (969088206886).

1211020201010 is a wasteful number, since it uses less digits than its factorization.

1211020201010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15113677.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1211020201010 its reverse (101020201121), we get a palindrome (1312040402131).

The spelling of 1211020201010 in words is "one trillion, two hundred eleven billion, twenty million, two hundred one thousand, ten".