201211020121010 has 64 divisors (see below), whose sum is σ = 371753730230400. Its totient is φ = 78364751961600.

The previous prime is 201211020120967. The next prime is 201211020121031. The reversal of 201211020121010 is 10121020112102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1601183561 + ... + 1601309219.

It is an arithmetic number, because the mean of its divisors is an integer number (5808652034850).

Almost surely, 2^{201211020121010} is an apocalyptic number.

201211020121010 is a deficient number, since it is larger than the sum of its proper divisors (170542710109390).

201211020121010 is a wasteful number, since it uses less digits than its factorization.

201211020121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133467.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201211020121010 its reverse (10121020112102), we get a palindrome (211332040233112).

The spelling of 201211020121010 in words is "two hundred one trillion, two hundred eleven billion, twenty million, one hundred twenty-one thousand, ten".