1201011021210 has 1536 divisors, whose sum is σ = 4353630363648. Its totient is φ = 204957941760.

The previous prime is 1201011021191. The next prime is 1201011021229. The reversal of 1201011021210 is 121201101021.

It is an interprime number because it is at equal distance from previous prime (1201011021191) and next prime (1201011021229).

It is an unprimeable number.

It is a polite number, since it can be written in 767 ways as a sum of consecutive naturals, for example, 16452205734 + ... + 16452205806.

It is an arithmetic number, because the mean of its divisors is an integer number (2834394768).

Almost surely, 2^{1201011021210} is an apocalyptic number.

1201011021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201011021210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2176815181824).

1201011021210 is an abundant number, since it is smaller than the sum of its proper divisors (3152619342438).

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

1201011021210 is a wasteful number, since it uses less digits than its factorization.

1201011021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1201011021210 its reverse (121201101021), we get a palindrome (1322212122231).

The spelling of 1201011021210 in words is "one trillion, two hundred one billion, eleven million, twenty-one thousand, two hundred ten".